Det. Murdoch and Const. Crabtree investigate when a body is uncovered by workmen. The remains are quite old and date from perhaps the mid-1860s. Dr. Ogden's review of the remains indicate that he might have been murdered. Among the remains is a gin flask with a note secreted in a false bottom. The note is signed by none other than the man who would later become Canada's first Prime Minister, Sir John A. MacDonald. The dead man is soon identified and Murdoch's old nemesis from Ottawa, spook Terence Meyers, is on the scene as well. A surprise visitor to the station gives them vital information about the theft of $1 million in gold and a connection to the U.S. Civil War.

Murdoch is summoned by no less than Prime Minister Laurier to head off the launch of an explosive-armed missile set to be fired from Canada to New York City unless a ransom demand of $4 million is met within the next 24 hours.

Murdoch, Brackenreid and Ogden are named as accomplices when Terrance Meyers faces charges of treason.

Hours before a clandestine visit by President Taft, Murdoch is entangled by Terence Meyers in an experiment gone wrong.