The owner of the SS Keewatin, Clarence MacFarlane, receives a threat and Detective Murdoch and Inspector Brackenreid board to investigate. About to sail on its maiden voyage bound for Rochester, New York, Murdoch wants to stay aboard after he learns that Julia is one of the guests on board for the maiden voyage. Their investigation uncovers a real threat to the ship.
A competitive racer dies in the middle of a bicycle race, leading Murdoch to believe he was killed by a mysterious stimulant.
Murdoch becomes involved in the movie making world while investigating a murder involving James Pendrick and Thomas Edison as suspects.
Murdoch re-encounters David Kingsley/Sherlock Holmes, who is investigating the murder of his young client's godfather and the disappearance of his nanny.
Murdoch investigates a woman's supposed death by drowning, with the primary suspect being her abusive husband who had recently become docile.
Murdoch investigates the apparent suicide of one of Julia's patients.
The body of a young woman is discovered washed up on a beach with what appear to be large bite marks on her body.
A murder leads Murdoch and Crabtree chasing a potential suspect to Newfoundland, where they are caught between a family feud for a treasure map.
Murdoch and his colleagues escort James Gillies to his execution in Kingston via train.
Detective Murdoch investigates a ragtime group's complicated past when its lead singer is found dead.
A series of diamond thefts in which the thief tunneled up from the earth leads Crabtree to believe in the existence of mole people.
A dying man confesses to a murder that Murdoch discovers the man could not have committed.
A bank president goes missing just before his engagement party, leading Murdoch to a run-in with a familiar face. Meanwhile, Julia receives information that James Gillies is alive and sets out to find him.
Crabtree faces off against Leslie Garland in a game of curling. Meanwhile, Julia and Emily attend a bachelorette party on what may be a haunted island.
Murdoch must deal with spies and secret plans in Toronto when U.S. President William McKinley is assassinated in Buffalo, New York.
Crabtree teams up with a suspect accused of poisoning a visiting Chinese dignitary in order to find the real killer while Murdoch and Julia receive proof that James Gillies is dead.
After a determined opponent of industrial progress straps a bomb onto a factory owner, Murdoch must stop the bomber from destroying all of Toronto.
Julia learns the truth about her father when he unexpectedly dies and Brackenreid assumes responsibility of an investigation into the murder of a mathematical genius.