When a flying machine crashes, killing a man on the ground, Murdoch's investigation uncovers high-level conspiracy and sabotage in the race to achieve the first human-controlled flight.

After a veteran of a brutal North African battle is slain by a sword, Detective Murdoch's prime suspect is the victim's fellow soldier, who is none other than Winston Churchill.

After a series of seemingly random murders, Murdoch rigs a film camera with a timer on a downtown street corner in order to capture the killer.

When Murdoch pursues a murderous gang of armed robbers, his prime suspect is a man claiming to be Sherlock Holmes.

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

When an anonymous madman threatens the citizens of Toronto with a deadly toxic gas, Murdoch must race against the clock to stop him.

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

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

An uncooperative witness impedes Murdoch's investigation into a pawnbroker's murder, and Brackenreid faces resistance while looking into the prison death of an old army buddy.

A series of violent drowning deaths of university-educated unmarried career women leads Murdoch to suspect sexist and racist motives.

Detective Murdoch and Julia find themselves at odds when a delusional woman (Sheila McCarthy) becomes the prime suspect in the violent stabbing of her gambling fiancé.

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.