Murdoch travels to Montreal to search for Anna Fulford and her son while under the watchful eye of The Black Hand. He is assisted by Freddie Pink, who reveals she has assisted Fulford's escape. In Toronto, Dr. Ogden is asked to care for a wealthy donor to the hospital who has a brain tumor, Crabtree is forced to marry one of his captors to free Effie Newsome and Watts investigates the death of a Japanese woman whose family claims was being abused by her husband. Violet has legal papers drawn up
To save his former lover and son, Murdoch makes a risky deal with a Black Hand henchman.
Murdoch pursues Inspector Giles after he escapes from prison to vindicate a murderer.
When their train derails, Ogden and Brackenreid suspect it was sabotage to hide a murder.
When Murdoch investigates the murder of a ladies man, Crabtree's aunt is the prime suspect.
On Halloween, Murdoch pursues a killer dressed as a clown who is terrorizing romantic, young couples.
To solve an inmate's murder, Murdoch sends Ogden undercover at a woman's reformatory. Watts has to see a man about a peacock.
While investigating a stabbing, Murdoch and Brackenreid inadvertently discover spy Terrence Meyer's hidden civilian life.
Murdoch investigates when Higgins goes missing while searching for Ruth's kidnapped sister-in-law.
Murdoch suspects the murder of a nasty, satirical cartoonist has links to city politics.
Murdoch and company's Christmas at an idyllic country estate turns deadly.
Murdoch investigates the death of a stage manager at a going-away party for Mary Pickford.
Dr. Sigmund Freud and his colleagues come to Murdoch and Julia for help investigating a death threat against him.
After Murdoch arrests a farmer for trying to kill a woman he claims is a witch, he mysteriously dies while in custody.
When Murdoch's son, Harry, is visiting Canada, he and Julia are abducted by Ralph Fellows. Meanwhile, Watts investigates the murder of the wife of his former lover, Jack Walker.
A charity basketball game takes a turn for the worse when a friend of the game's inventor is found dead. Meanwhile, Watts learns that the circumstances surrounding Clara Walker's death are not what he believes.
Violet Hart investigates when a protester dies at an event for Black people's rights
Murdoch investigates when a Japanese spy is found dead in a Korean family's cellar
A vagrant camp is opposite a house where a murder took place, hence the family suspect one of those homeless people committed the murder. Murdoch investigates the robbery and murder and other facts come to light.
Murdoch has to investigate after a murder is transmitted over James Pendrick's new invention.
Murdoch investigates the death of a musician whose murder was narrated in a blues song
When Crabtree's mentally-deranged kidnapper, Amelia, turns herself in, he braces for trouble.
When a man resembling Murdoch is shot, he must find the killer before the killer finds him.
With his family in hiding, Murdoch tries to discover who is behind attempts on their lives.