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.

Murdoch pursues Terrence Meyers who is suspected of murdering two men and committing treason. Watts tracks down a man's neighbour who vanished while making a chocolate treat.

A Japanese scholar is kidnapped and Inspector Choi suspects his estranged brother is involved.

A crime novelist pushes her way into Murdoch's investigation of an attorney murdered at his own retirement party.

Effie enlists Murdoch's help to defend a maid accused of killing the owner of a prominent fashion label, while Violet's neighbourhood safety program proves to be anything but safe.

Murdoch pursues a thief when a diamond tiara is stolen during a special Christmas event, while Margaret Brackenreid tries to convince Anna Pavlova to perform in a charity Nutcracker ballet.