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.
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.
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.
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.
