A toxic gas will be released into the city of Toronto, unless Murdoch can find a way to stop it.

A charity basketball game takes a grim turn for Murdoch and his colleagues when a friend of the game’s inventor is murdered.

At Halloween, Murdoch pursues a killer dressed as a clown who is terrorizing romantic, young couples.

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

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

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

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

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

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

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

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

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

Murdoch and Brackenreid unwittingly put their careers at risk when they investigate high-level police corruption.

Murdoch investigates the poisoning of an anti-prohibition politician while Margaret Brackenreid hosts a visit from radical temperance advocate Carrie Nation.

Crabtree investigates the death of a wrestler and uncovers deception and fraud.

Murdoch’s admirers interfere with a murder investigation; Ogden thinks about running for office.

Crabtree teams up with the prime suspect in the murder of a Chinese dignitary, in the hope of finding the true killer.

Detective Murdoch faces his fears when a phobia patient is murdered.

Detective Murdoch and his methods are compromised when one of his colleagues is implicated in a suspicious murder.

With his colleague sentenced to hang for murder, Detective Murdoch races to exonerate them and steps into a trap set by the real killer.

Murdoch investigates the murder of an Eaton’s department store manager who was disliked by the shop girls.

A murder investigation is hindered by an uncooperative witness.

Murdoch investigates multiple drownings of a single career woman.

A delusional woman is the prime suspect in the stabbing of her fiance.

Murdoch enlists some revealing detective work while investigating a murder at a nudist community.

While investigating the death of a politician, rumored to have been killed by a vengeful ghost, Crabtree’s theories of the paranormal conflict with Murdoch’s scientific beliefs.

Two bank safe deposit boxes that were being transferred are taken by thieves and the crime is investigated by Detective Murdoch. The getaway driver for the thieves is killed.  While…

Murdoch investigates the crash of a flying machine that killed a man, uncovering conspiracy and sabotage.

Detective Murdoch suspects a soldier after a veteran is slain by a sword.

Murdoch films a street corner to catch a killer.

Detective Murdoch suspects the ambitious inventor of an electric vehicle murdered an associate who stood in the way of his plans to compete with Henry Ford.

Murdoch makes a surprising discovery at a dolls house fair; in one of the houses the artist has placed a hand firing a gun. This is no ordinary model –…

James Pendrick, owner of the Pendrick Building, proudly shows off his extensive art collection to a group of admirers. The highlight of the tour is a magnificent Rembrandt that Pendrick…

As they investigate a young woman’s death, Murdoch and Dr. Ogden find their relationship threatened when they turn out to be of opposite opinions in the matter of abortion.

When his estranged father’s drunken body is found passed out near a murder scene, Murdoch finds himself questioning his own objectivity.

A family celebration of Alexander Reynolds’ 60th birthday is dampened when he’s found with a knife plunged into his chest. Murdoch is called in and soon discovers the victim was…