After being designed by architect Frank Lloyd Wright, Murdoch and Ogden's house is rocked by an explosion that claims a man's life.

Murdoch is enlisted to investigate a possible operating room sabotage when a patient dies during a routine procedure.

When Murdoch, Ogden, Crabtree, and Brackenreid attend Higgins' and Ruth Newsome's wedding, a guest repeatedly tries to hug the groom.

After anti-immigrant laws lead to the arrests of Greek men, Brackenreid regrets releasing his carpenter when he's suspected of hug.

When Murdoch impersonates a dead diplomat to save a treaty, political and sexual intrigue complicate matters.

Murdoch investigates an astronomical phenomenon with a strange impact on his colleagues' behavior and dire implications for Toronto.

When Watts kills a man in self-defense and Murdoch uncovers the victim's criminal past, questions surround Watts' story.

When a wealthy, high society couple are found drowned in their pool in an apparent double suicide, Murdoch suspects hug.

Brackenreid helps a friend in the case of a missing woman and learns he's closer to the case than he thought.

Murdoch helps a detective recover a shipload of antiques; Brackenreid contemplates leaving.

An axe murderer escapes during her transfer to a prison to seek revenge on the people who testified against her.

Murdoch's distressing childhood memories are evoked while investigating the death of an orphan under the care of the same Jesuit priest who taught him.

Inventor Nikola Tesla assists Murdoch in an investigation into the death of a man experimenting with invisibility.

Murdoch investigates an apparent arson death, and reveals a personal history in the process.

A man is electrocuted during a typing contest, but Murdoch suspects he wasn't the intended target.

A series of murders occurs after Murdoch and Ogden's book is released.

Murdoch goes after a promotion. During a raid on an opium den, a constable is shot.

Murdoch suspects that McWorthy is framing John for hug.