The Jeffersonian team investigates the murder of Jason Siedel, an accountant for the state department, whose remains were found in a hotel air conditioning unit. When Booth finds his old army buddy and CIA agent, Danny Beck, clearing away evidence at the victim's condo, he begins to realize that Siedel's murder could yield more suspects than the team had anticipated. Booth also seeks out Aldo Clemens, his friend and an ex-priest from their military days together, to get advice on his relationship with Brennan, now that Pelant has put a wedge between them. Meanwhile, Brennan must decide whether to have faith in Booth or to end her relationship with him.

The Jeffersonian team investigates the murder of Adam Pak, a management consultant whose remains were found being eaten by bobcats. When evidence leads the team to a marriage retreat site, Brennan and Booth go undercover as previous personas "Roxie" and "Tony" to try to find more evidence. While at the retreat, Brennan and Booth meet fellow married couple Bill and Evelyn Schumacher, whose relationship seems a little too perfect.

The Jeffersonian team investigates the murder of Jamie Delcampo, a member of the Estrellas Locas gang, whose remains were found in a burnt out car. Meanwhile, having taken time off from the FBI in the wake of Pelant's latest assault on the team, Sweets ultimately decides to help with the investigation when he discovers that a young boy from the center where he volunteers is the son of one of the gang members.

The team devises a plan to use a donated cadaver to draw out Pelant; Sweets returns to work and believes Agent Flynn isn't who he seems.

The team investigates the murder of a high school principal who was dying of cancer; Brennan and Booth plan their wedding; a virtual profiling system threatens Sweets' job.

The Jeffersonian team investigates the murder of Nancy Handelman, whose body was discovered at the time of Brennan and Booth's wedding rehearsal. When the case becomes more serious than the team anticipated, Cam and Angela do everything in their power to keep the details of the investigation from Brennan in order to ensure that she will stay focused on her big day. Tensions run high when unfortunate events occur to stall the wedding temporarily, and Max comes to town with a suspicious duffle bag full of money.

Unable to relax on their honeymoon, Booth and Brennan decide to help a local detective solve the murder of a Nazi war criminal; Hodgins and Angela look after Christine.

The team suspects that a man who made his money donating sperm was killed by a recipient who learned his records were inaccurate; Brennan enters a feud with a fellow author (Nora Dunn).

A key witness turns up dead in a case for which Brennan is a juror, so the team works to discover what has happened.

The Jeffersonian team investigates the murder of a food scientist whose remains were tossed in a meat grinder and mixed into cans of stew served in a school cafeteria. When the team uncovers the scientist's newest - and highly lucrative - food invention, they also track the trail of jealous competitors in the multi-million dollar food industry. Meanwhile, Angela plans a post-wedding bachelorette party for Brennan, which gets crazier than intended.

The Jeffersonian team investigates the murder of a nationally ranked gymnast, whose remains were hit by lightning and scattered throughout a public park. Although evidence points to a fellow gymnast as the key suspect, Brennan and Booth discover the victim was leading a double life. Meanwhile, Booth gets upset when Brennan shows surprising empathy for the victim's father, and Cam confronts the woman who stole her identity.

The team investigates when the remains of a girl who died 18 years earlier are delivered to Brennan and Booth's house; Brennan dreams about Pelant.

The Jeffersonian team investigates the death of Colin Haynes, a struggling country music singer whose remains were found in a shallow grave. When the team learns about the victim's music career, it leads them to his record label, which, they discover, was deceitful in its dealings with him. Meanwhile, squintern Wendall Bray breaks his arm during a hockey game and Brennan takes a closer look at his injuries, only to discover some shocking news.

When the team discovers a renowned chess master in pig slop, Sweets goes under cover in the chess world; a science magazine honors Cam; Dr. Douglas Filmore fills in as lab intern.

The Jeffersonian team investigates the murder of Lauren Frank, a kidnap victim whose remains were found buried at a park. But when they discover the unhappy relationship that Lauren had with her stepmother, the team starts to think the killer was someone closer to the girl than expected. Meanwhile, Hodgins uncovers a shocking secret about his family and Brennan and Booth face a common couples dilemma - whether to co-mingle their funds.

When a CIA informant is found murdered, Booth and CIA Agent Danny Beck (guest star Freddie Prinze Jr.) must work together to track down an Afghani terrorist. Meanwhile, Brennan wants to work more closely with Booth in the field, and the duo must confront the implications of what that means to their family.

When the remains of a repo man are found in a septic tank, the team learns he had a troubled past; a forensic anthropologist (Ignacio Serricchio) who has defected from Cuba needs an internship.

When an actor known for playing a popular character on a kids' TV show is murdered, unexpected suspects are discovered; Brennan and Booth plan a party for Christine's birthday; Clark asks for opinions on his novel.

When a wealthy artifact collector walks into his own funeral, the team must determine the real identity of the deceased; Finn's new hot sauce venture is making big money.

The remains of a former art student are found in a log in a forest; Wendell returns after beginning cancer treatments; Booth prepares for an FBI competency test.

The team investigates the death of a woman whose body was cryogenically frozen before being dumped in a swamp; Cam is nervous to meet Arastoo's parents; Booth is up for a promotion.

When the remains of a woman from a wealthy family are found in a national park, the team thinks she may be a victim of the Ghost Killer; Booth's career might be in for some changes.

When the head swim coach of a community college is found dead at the bottom of the well, possible suspects think he may have been having an affair; Sweets covers for Booth in the investigation as Booth prepares for a congressional subcommittee.

The team investigates the death of a man who had offered Booth information on a possible government cover-up related to a previous case, but was killed before their meeting took place. As Booth and the Jeffersonian team dig deeper into the burgeoning conspiracy surrounding the man’s death, it’s evident Booth may be in over his head, and his future with the FBI is put in question.

Brennan and the team attempt to absolve Booth and get him released from prison. The remains of a man who has been dead for over sixteen years prove to be significant.

Aubrey works alongside the team to investigate a government conspiracy. DNA found on a previous victim helps the team to narrow down the suspects.

The remains of a right-wing radio host are found in a storm drain, and the investigation reveals some surprising extracurricular activities that narrows the search for suspects. Meanwhile, Agent Aubrey tries to get Booth to trust him, and Brennan worries about her husband's state of mind.

The investigation of the murder of a video-game designer reveals the wealth he accumulated during his career, which makes a suspect out of everyone who was in his inner circle. Meanwhile, "squintern" Jessica sheds light on an educational opportunity; and Brennan and Booth discuss Christine's future.

Brennan runs into a publishing rival. Wendell hears back from his diagnosis. The team members investigate a murder when remains are found in a convention's stairwell.

The case of a maid's death turns out to be a bigger case than originally thought. Tensions are rising between Cam and Brennan.

The team investigate a billion dollar hedge fund company when severely damaged remains from human's are found under a merry go round.

The team is called in after a crossword puzzle master is discovered in an urban fracking site.

The team is called in after the remains of a psychology professor are discovered.

Paying homage to Alfred Hitchcock in an episode that reimagines the Jeffersonian and FBI teams in 1950s Hollywood. Brennan plays an LAPD detective who's battling sexism on the force, and Booth is a notorious jewel thief who is far more than he seems to be. When Booth is framed for the murder of a rich socialite, he and Brennan team up to clear his name and find the true identity of the murderer.

Angela’s psychic friend is enlisted when the body of a local psychic is found.

The team are called in after a wealthy teacher is discovered dead in an abandoned bookstore.

When the body of an ex-con is found in pieces, the Jeffersonian team investigates a local bakery known for employing former felons.

The team take a look into the death of a mini-golf superstar. Brennan is concerned about her dad.

Booth and Brennan work undercover as they become involved in the world of underground poker.

The team are called in after the remains of a celebrity chef are found in a local park.

Brennan and Booth believe that bullying is behind the death of a private high school student.

The team attempt to find evidence that Alex Rockwell did not commit the crimes of which he was convicted for.

The team must race against the clock to expose the killer of the son of a powerful diplomat.

A well-known cookie jar collector's body is found on a riverbank.

The team take a look into the death of an ex-con who has become a yoga instructor.

When the Jeffersonian team discovers remains of a victim, and elements of the crime scene point to a possible protege of serial killer Christopher Pelant, they must revisit their prior work on Pelant while tracing new clues that will hopefully lead them to the copycat killer. Meanwhile, Angela is skeptical about her and Hodgins decision to move to Paris and Brennan and Booth contemplate options outside of the Jeffersonian and FBI.

Booth goes missing six months after he and Brennan left their careers behind, but a case with ties to the couple pulls Brennan back into the world of forensic analysis, which brings her into contact with a member of Booth's family and Arastoo Vaziri, who's taken the lead at the Jeffersonian in her absence. Meanwhile, the FBI investigate Booth's disappearance, but one agent's tactics are bad for the team's morale.

Booth is still missing, but the team learns that Agent Miller has hidden information about his whereabouts and physical state. Meanwhile, a digital forensic scientist helps Angela try to decipher information pertaining to Booth's location and the circumstances of his disappearance; and Arastoo makes a decision that will change his and Cam's personal and professional relationships.

On Brennan and Booth’s first official day back at their respective positions at the Jeffersonian and the FBI, things get exciting when remains are found at a fish farm under suspicious conditions, prompting them to investigate. After it’s discovered that someone harvested several of the victim’s internal organs before he was dumped in the water, Angela tracks down the seller and buyer of the organs to try to uncover important details in the case. Meanwhile, Booth readjusts to his position back at the FBI and discovers Aubrey has taken over his old office; Hodgins pushes Angela to showcase her photography work; and Cam struggles with her decision to choose work over her relationship with Arastoo.

When remains of real estate agent Justin Ross are discovered in a forest and appear to have been destroyed by coyote-wolf hybrids, Brennan enlists the help of fellow brilliant forensic anthropologist Dr. Beth Mayer to assist in the investigation. In addition to her professional achievements, Mayer is surprisingly knowledgeable about the world of fantasy football, a key link to Ross’ past and one that could provide vital information in finding his killer. As Booth and Aubrey dig into Ross’ fantasy football league history, they discover he was actively involved in a Twitter feud with NFL star Lou Divers, and was also owed a large sum of money from the league’s commissioner, making each of them suspects. Meanwhile, Brennan resists feeling competitive as Mayer impresses the team with her expertise and decades of accomplishments.

It’s Halloween time at The Jeffersonian as the team gets a surprise visit from Lt. Abbie Mills and Ichabod Crane, who have traveled from the spooky town of Sleepy Hollow to help on a murder case of a young woman whose body is found on top of a 18th century military general’s headless body. The new foursome must figure out how to work together to discover who the 200-year-old headless corpse is and how the two murders are linked. Meanwhile, Booth and Brennan come up with the ultimate Halloween pranks to play on each other.

The crossover continues on Sleepy Hollow S03E05 Dead Men Tell No Tales (II).

A pair of funny sanitation workers discover the shredded body of a U.S. Senator in a street sweeper, which leads Brennan, Booth and the team to Capitol Hill, where they meet with U.S. Senator and majority whip Hayley Winters and the victim's chief of staff Eric Morales to get to the bottom of this political murder. Meanwhile, as Aubrey starts to develop a relationship with squintern Jessica, he looks into her past to make sure nothing will harm his dream of a future in politics

The team investigates the murder of an escape artist whose body is found in the woods. They discover that the victim worked at the Magic Palace, and had some secret activities in the works that might have made him enemies in the magic community. Meanwhile, Brennan and Booth poll their friends as to whether or not the tooth fairy should visit Christine, and Angela continues to work with Sebastian Kohl on her photography.

The team investigates the high-stakes murder of a political journalist who was found dead after recently publishing an article exposing corruption in the NSA. Due to the nature of the investigation, Hodgins’ paranoia takes over as the team realizes their every move is being watched. Meanwhile, Brennan secretly tries to plan a surprise for Booth and the whole team celebrates Thanksgiving together.

Booth and Brennan go under cover at an Old West-style shooting competition; Angela and Hodgins talk about the future; Cam and Sebastian grow closer.

The team investigates a police officer's murder and decides what is important to their futures.

Hodgins is eight weeks into his rehabilitation for his paralysis and forced to navigate life in a wheelchair. Meanwhile, Brennan and Booth investigate the death of a public defender who had multiple defendants from previous cases with motives to kill her.

The team investigates a body found in a car crash, the remains of which belong to a founder of a men's rights organization who may have been the victim of domestic abuse. As Brennan learns more about the tenets of the victim's organization, which claims middle-aged white men are oppressed and feminists are man-haters, Brennan uncharacteristically loses her cool during an interrogation and assaults the organization's co-founder. Meanwhile, Angela and the team struggle to deal with Hodgins post-wheelchair bitterness and Booth is convinced Brennan is a jinx for the Philadelphia Flyers.

The Jeffersonian investigates the decomposing body of a social worker in the park, but evidence suggests the killer lived with the body for months before dumping it. Things get even more complicated when they determine another set of remains has similar details, which link the victims to a serial murderer who had sinister interactions with his victims' bodies. Booth and Aubrey consult with behavioral analyst Karen Delfs to help with clues to the killer's identity, while Cam tries to determine what (and who) she wants in her romantic life.

The Jeffersonian investigates the murder of a convicted felon who had been released to a halfway house, but disappeared, and a suspect in the case has ties to Booth. Meanwhile, Brennan testifies at an FBI hearing about the circumstances regarding her assault of an unarmed suspect from a previous case, and the outcome of the hearing could lead to her suspension and prevent her from working with the FBI. Aubrey and Jessica’s first kiss is delayed again and Hodgins continues to push Angela away.

The team investigates the body of a private investigator who was found frozen in ice, after being dumped in the Potomac. The victim, a man with many enemies, was a "fixer" who made sure his clients' problems got "resolved." Meanwhile, Aubrey is shocked to find information tied to his father's whereabouts, Angela and Hodgins continue to work on their rocky relationship, Brennan and Booth get Christine's first report card and criminal behaviorist Karen Delfs asks Aubrey out on a date.

The team investigates the death of the leader of the Lynwood University male acapella singing group, "The Whippersnaps," whose body was found in the school rat lab. The victim recently kicked out Ian Jansen, one of the group's best singers, sending Booth and Aubrey to question Ian and other current members of the male group and some stars of the competing female acapella group to get a handle on the group dynamics and what could have led to the murder of one of their own. Meanwhile, surprising information about Aubrey's own college experience is brought to light, Hodgins applies for an experimental nerve regeneration study, Booth tries to plan a summer trip with Parker and a new intern joins the Jeffersonian lab.

A drunk college student discovers the dead body of a Secret Service agent just before a presidential visit to the area. Booth is ready to hit the ground running and turns to Secret Service agent and former colleague Brandt Walker for information, but is surprised to learn the Secret Service has reservations about Booth’s involvement in the case. The team uncovers some shocking evidence that heightens the seriousness of the case, causing Booth to step up for his country. Meanwhile, Brennan is out sick with the flu and former intern Dr. Colin Fisher returns to the Jeffersonian to run lead on the case, but Brennan refuses to be kept out of the loop. Also, Hodgins takes his life into his own hands and turns a corner after a potentially dangerous experiment.

To produce a television segment on the Jeffersonian’s Medico-Legal lab, a documentary crew follows Brennan, Booth and the Jeffersonian/FBI team on a “typical” case as they investigate a corpse found in a landfill that was buried there more than a decade ago. The camera captures normally unseen footage of the team at work, while candid commentary by each of the team members provides an inside look at the investigation as Booth and Aubrey show off their unique skills in the field, and Brennan and her team prove their expertise and integral importance to solving murder cases.

The team investigates the death of a popular professional hockey player whose headless corpse was dumped in the river. As Booth and Aubrey question the player's coach, Booth's depth of hockey knowledge is integral to solving the case, and he's reunited with a hockey rival from his past, putting him back on the ice once again to face off against him. Meanwhile, Hodgins and Oliver have a competition of their own when Hodgins builds two drones and they compete to retrieve the victim's missing head, and Booth and Brennan attempt to declutter their home.

When the remains of famous billionaire explorer Henry Charles are found in Antarctica, the high profile case is brought to Brennan and Booth to determine if his death was a murder. The Jeffersonian team confirms he was killed when he went missing ten years ago on an expedition, but the timeframe puts the Jeffersonian's Dr. Clark Edison, who was with Charles for the expedition, on the short list of suspects. Meanwhile, Cam's sister comes into town to help with wedding plans and old family friction comes into the picture.

The team investigates a body found at a glass recycling plant with a diamond lodged in its jaw. French Inspector Rousseau approaches the team with an accusation against the Marquis De Chaussin, who is revealed to be the victim's husband and lives in Virginia. Meanwhile, Booth discovers he suffers from a temporary eye illness, and Hodgins thinks he's being followed by a ghost.

The team dives back into investigating a serial killer from the past, attempting to find “The Puppeteer,” who lives with his victims’ bodies before disposing of them. Meanwhile, Brennan works through her guilt over her retirement last year, blaming herself for not stopping the serial killer earlier. However, little does she know she might be in some trouble of her own.

Booth and the rest of the lab desperately search for Brennan who was kidnapped by her former assistant, Zack Addy. Brennan's rescue is, however, just the beginning of their problems.

After discovering the body of a man involved with creating artificial intelligence bots, the team must figure out whether the victim's own A.I. bot was programmed to kill him. In the meantime, Bones plans a special surprise for everyone for her 40th birthday.

When the body of an old man is found in an acid dump site, the team becomes enmeshed in retirement home drama. As they explore the case, talk of marriage and kids begins to dominate the conversation back at the lab.

The team investigates the murder of someone from Booth and Brennan's past. Meanwhile, Aubrey faces a moral dilemma of his own when he discovers his dad is back in the picture.

When a tutor of privileged students turns up dead, the team sorts through all the possible perpetrators, from disgruntled parents to the tutor's roommate with a criminal record. Meanwhile, Bones is frustrated with the voice of her audio book and tries to prove that she can record it herself.

The dismembered body of successful golfer-turned-lumberjack Phyllis Paul brings the squints to the Lumber Sports Regional Championships. At this competition, Booth and Brennan discover numerous secrets that could have resulted in Phyllis' murder, including an affair with a married rival. Meanwhile, Hodgins secretly analyzes the bacteria on the bone of a prior victim that he believes will exonerate Zack.

When a series of corpses with ties to Booth's former Army unit appear around D.C., Booth must dive into his past to find the killer before the killer finds Booth. Meanwhile, Brennan's father, Max, hides a serious medical procedure from Brennan, leaving her to grapple with her father's trust and mortality, as well as her family being in danger.

A recent loss creates a rift between Booth and Brennan, as they deal with their grief in different ways. Meanwhile, an old flame from Brennan's past comes to visit.

When a young man dies in a horrendous hay baler accident, Booth, Brennan and Aubrey slap on trashy disguises and go undercover at a rowdy demolition derby competition to investigate the case. Meanwhile, Dr. Gordon Wyatt returns and assists Hodgins and Cam when the ongoing Gormogon case hits a dead end.

When the burning, bruised body of an aspiring writer/director crash-lands onto a passing car, the team investigates a series of odd locations and characters that are connected to his film. Meanwhile, Bones seeks guidance from Dr. Mayer on the meaning of passion in the work place and Booth allows Aubrey to take the reins on their current case.

Brennan testifies for Zach in trial, Angela reveals some big news, while Aubrey and Jessica come to terms about their future together. All the while, the team discovers Kovac has escaped, leaving Booth in a race against the clock to protect himself and those closest to him from what may be Kovac's most dangerous plan yet.

With Kovac still at large, the team searches for evidence to track him down. After Brennan experiences a setback, the rest of the team must figure out how to find Kovac without her, putting everything she has ever taught them to the test. When all signs point to Kovac having outside help, as well as a hideout, Booth and Brennan go searching for him.