When the daughter of a wealthy family is kidnapped in an attempt to gain notorious internet fame, Maggie and OA discover the kidnapper’s plans go far beyond abduction in order to never be forgotten.

After a decorated FBI agent is murdered, the team investigates and uncovers the man led a double life. Also, Maggie struggles with what information she should reveal to the agent’s widow, who is also her personal friend.

When a board member of a soon-to-be-public medical tech company is murdered, the team tries to find out who had the most to gain from his death. OA is conflicted when pressure to help a family member is at odds with his commitment to tell the truth.

A bank holdup leads the team to a safe deposit box, the contents of which have the potential to destroy national security; Kristen is eager to get back into field work while other team members still have their concerns.

After the police ignore a desperate father's plea for help, he abducts a billionaire's daughter and holds her hostage in a near-impenetrable safe room until his own missing child is returned to him. Also, Jubal puts his hostage negotiation skills to the test.

The FBI team investigates a drug deal gone bad after the body of a college student is found. Also, Detective Hailey Upton temporarily joins the team and finds her usual investigative methods clash with the Bureau's more buttoned-up environment.

When the leader of a drug cartel and one of the world's most wanted men, Antonio Vargas, is apprehended by the team, the entire FBI headquarters is put at risk when his henchmen unveil a terroristic threat to free him. During the turmoil, Isobel must make the difficult decision whether to sacrifice her conscience or her career.

The team rushes to track down two doctors abducted by a desperate father willing to do anything to save his son. Also, Jubal's uncertainty in his family life affects his judgement during the hostage situation.

When the CEO of a major brokerage firm is shot and killed while surrounded by protesters, the team looks into who had the most to lose from his company's perceived manipulations. Also, Scola's previous Wall Street career and the reasons he left come to light as the financial details of the case begin to unfold.

After Rina is critically wounded while heading to work with Jubal, the team makes the chilling discovery that a vengeful Vargas orchestrated the shooting from behind bars and continues to target the rest of their team and their loved ones.

When a Muslim college student and his younger brother are murdered, the team connects with the outraged imam of OA's former mosque, who insists the victims were wrongly targeted as terrorists.

When a young couple is found murdered in a New York City park after returning from vacation, the team searches for a suspect linked to the drug trade. Also, Scola turns over a new leaf when it comes to his relationships.

OA is forced to confront one of his biggest fears when the team discovers that deadly sarin gas may have been sold to terrorists.

The murder of a TSA agent leads the team to hunt down a killer who is using drug mules to exploit airport security checkpoints. Also, OA struggles to cope with the aftermath of the sarin gas exposure and the 10th anniversary of his army friend's death in Afghanistan.

The team pivots when their sting operation to secure a massive bomb from an illegal broker leads them to discover that the device is already in the wrong hands. Also, Jubal’s promise to be present at his son’s birthday party is put to the test as the case continues to heat up.

The team investigates a series of brutal assaults; OA hides information about his own mugging.

A teen shows up at FBI headquarters with a large bag of fentanyl, seeking the team's protection from the men who shot his father; Nina goes to Scola with a proposal he is hesitant to accept.

The team jumps into action when analyst Kelly Moran is taken hostage.

When a prominent doctor is found dead in a ritualistic slaying, the team must race against time to hunt down a religiously motivated serial killer. Also, Scola faces a life-or-death decision.