Murdoch investigates an explosion inside the morgue as a private citizen while he and his fellow officers fight to reopen the station house against Mayor Vaughan's orders.

Inspector Choi is taken hostage in a roadside inn while transporting a criminal back to Toronto. The Crabtrees must make a difficult decision about their future when George gets a job offer.

A contestant is murdered during the "Toronto's Smartest Man" battle of the wits, leading Murdoch to join the contest to see if he can puzzle out who the killer might be.

Constable Roberts investigates the death of an old friend in his hometown, defying local police who rule it accidental. Murdoch's son Harry moves in, but it's a tight fit in his rooming house.