Murdoch suspects that rivals for a wealthy bachelor's affections may be responsible for a debutante's murder.

A massive fire consumes Toronto, complicating Murdoch's investigation into the murders of two young women.

After Murdoch discovers his childhood friend turned private investigator, Freddie Pink, might be implicated in a murder, he enlists his latest invention to find the truth.

When a murder case is reopened, Murdoch and Ogden must confront the possibility that they sent the wrong man to prison.

Murdoch and Ogden investigate the poisoning of a businessman. Rebecca is suspicious of a student's suicide.

While Murdoch investigates a football player's death, Brackenreid gets caught up in the team's Olympic quest.

Murdoch suspects a connection between dead men found with lipstick smudges on their faces and Crabtree's burlesque dancer sweetheart.

To catch a killer, Murdoch and Crabtree pretend a murdered witness is still alive.

Murdoch strives to apprehend a lecherous costumed criminal known as The Lurker, whose amorous encounters have escalated to murder.

Murdoch and Ogden contend with a killer who claims he’s possessed by the devil.

Murdoch discovers his passion for canines while investigating the death of a championship show dog.

Twenty years after a child was kidnapped, Murdoch investigates the identity of a man now claiming to be the wealthy heir.

When Murdoch and Ogden use their riverside property as a burial ground to study human decomposition, they dig up more than they imagined.

Murdoch devises a mysterious tonic that restores youthful vitality, but his pursuit of a partnership alarms Crabtree.

The discovery of a young girl's body and some grotesque sketches leads Murdoch to suspect a gang of death-obsessed teenagers.

Murdoch's investigation into the death of a roller-skating champion takes him into a world of aggressive and ruthlessly competitive young women.

An explosion involving the mysterious woman Watts has been investigating leads Murdoch to a surreptitious community.

The team gets caught up in a conspiracy and is in danger when a dancer asks Murdoch for help.

A jailed Murdoch must prove his innocence amid police and government corruption after the constables are ambushed, Ogden is kidnapped, and Brackenreid goes missing.

Murdoch and Watts discover fraud after a wine connoisseur is poisoned.

A recording device made by Alexander Graham Bell assists in the investigation of a murder at a dinner honoring Helen Keller.

Murdoch investigates a surgeon performing cutting-edge organ transplants.

A spate of murders staged as suicides leads Murdoch to suspect a sequential killer targeting the elderly.

In an attempt to solve a murder, Crabtree and Constable Brackenreid go undercover at a boys school.

Murdoch investigates a car accident and uncovers sinister motives.

Brackenreid begins painting again and gets the attention of a wealthy patron while investigating an artist's murder.

After obituaries are published in advance of two men's deaths, Murdoch discovers more intended victims with a member of Station House Number Four among them. He must keep them alive before their predicted demise.

Murdoch investigates a death which may have been caused by a high-speed travel device.

Murdoch and Brackenreid find some unsportsmanlike behaviour while investigating the violent death of a cricket player on the pitch.

Murdoch investigates when a statue of the Virgin Mary gifted to his church begins miraculously weeping.

When the judge of a cooking contest is poisoned, Murdoch realizes that other competitors also tasted the tainted ingredient, including Crabtree and Margaret Brackenreid.

When Theodore Roosevelt sneaks into Canada for a hunting trip, Murdoch discovers the American President is the quarry.

As Murdoch investigates a murder with connections to vaudeville entertainers Harry and Al Jolson, Watts unravels a mystery about his own family.

Crabtree goes undercover at a chess tournament to investigate the murder of a Russian master.

Murdoch and Ogden put aside a personal matter when Nate Desmond is charged with murder.

Season Finale - An argument leads Murdoch to help a man looking for his missing wife, Crabtree contemplates his future with Nina and the Station House team works on a grisly murder.

After being designed by architect Frank Lloyd Wright, Murdoch and Ogden's house is rocked by an explosion that claims a man's life.

Ogden enlists Murdoch to investigate possible sabotage in the operating room after a patient dies during a routine medical procedure..

Murdoch, Ogden, Crabtree and Brackenreid attend Higgins’ and Ruth Newsome’s wedding, but a guest repeatedly tries to kill the groom.

Anti-immigrant laws lead to the arrests of Greek men, and Brackenreid regrets releasing his carpenter when he’s suspected of murder.

Murdoch impersonates a dead diplomat to save a treaty, but political and sexual intrigue complicate matters.

Murdoch investigates an astronomical phenomenon with a strange impact on his colleagues’ behavior and dire implications for Toronto.

Watts kills a man in self-defense, then Murdoch uncovers the victim’s criminal past.

When a wealthy, high society couple are found drowned in their pool in an apparent double suicide, Murdoch suspects murder.

Brackenreid helps a friend in the case of a missing woman and learns he's closer to the case than he thought.

As Murdoch helps an Italian detective recover a shipload of stolen antiquities, Brackenreid considers shipping out.

Crabtree and John are transporting a convicted axe murderer to prison when she escapes to exact revenge on those who testified against her.

Murdoch's distressing childhood memories are evoked while investigating the death of an orphan under the care of the same Jesuit priest who taught him.

Inventor Nikola Tesla assists Murdoch in an investigation into the death of a man experimenting with invisibility.

Murdoch investigates an apparent arson death, and reveals a personal history in the process.

A man is electrocuted during a typing contest, but Murdoch suspects he wasn't the intended target.

After the release of Murdoch and Ogden's book, a series of copycat murders begin to take place.

As Murdoch seeks a promotion, a constable is shot in a botched raid on an opium den led by Watts.

Murdoch suspects John is being framed for murder by Inspector McWorthy and Brackenreid goes after the corrupt copper.

Murdoch investigates an explosion at a suffrage rally attended by Dr. Talbot and Julia when a man dies.

When a dockworker is shot, Murdoch pursues an elusive witness and learns anti-union thugs may be involved.

Murdoch investigates the bizarre murder of a young woman who disappeared a decade earlier yet somehow hasn't aged a day.

A death at an investment event leads Crabtree to the father he never knew. And Murdoch to suspect he may be culpable.

An adventure in the woods turns scary when Murdoch, Ogden, Higgins and Ruth are stalked by a beast that killed two men.

When a stamp enthusiast is murdered, Murdoch wonders if it was for his collection of unique stamps or lovers.

While moonlighting as a cab driver, Higgins finds a dead passenger in the backseat.

An actor is killed during a play featuring John Brackenreid and attended by Murdoch, Ogden, Crabtree and John's parents.

After a young woman is critically injured from a fall, Murdoch and Ogden suspect her family had a hand in it.

When a whiskey baron and his family are murdered, Murdoch puts Parker in the cells with a hit man to see who hired him.

Murdoch investigates the disappearances of Nikola Tesla and Marie Curie from a conference of 20th-century innovators.

When a body is found during a fox hunt, Murdoch and Brackenreid suspect a group that is opposed to the sport is responsible.

Suspicions fall on Murdoch when his unpleasant neighbor is murdered.

Murdoch and Ogden discover rival gangs within the jail during an investigation of a prison inmate's suspicious suicide.

Murdoch and Ogden are named as accomplices when Terrence Meyers faces charges of treason.

Ogden and Effie try to untangle the death of a hair salon owner that occurred outside Murdoch’s jurisdiction.

Murdoch suspects a colleague has ties to a murder. Ogden flirts with danger. Crabtree meets an intense fan.

After a colleague is murdered, Murdoch is convinced Violet Hart is involved.

A vaudeville comic's death leads Murdoch to suspect Charlie Chaplin was the target.

Brackenreid learns his son is wanted for murder and refuses Murdoch's help with the case.

Murdoch learns from Terence Meyers that James Pendrick has been abducted and the inventor's life is in danger.

A part time university student is found dead with electrical burns on the head and two newly arrived American psychology professors with a penchant for unusual experiments may be responsible.

Murdoch and Ogden's weekend at a country inn goes awry when a guest is murdered.

Murdoch investigates the death of a harlot who was promised in a marriage transaction.

Murdoch, Ogden, Crabtree and Brackenreid must escape an abandoned factory rigged with rooms designed to kill.

Murdoch investigates a murder at the Newsome Estate, which has declared itself a nation.

Murdoch's investigation of a murder at an opium den intersects with Brackenreid's pursuit of Nomi's missing friend.

The brutal murder of a woman from Murdoch's past complicates his life.

Reeling from a personal revelation, Murdoch seeks to avenge the murder of Anna Fulford.