In the midst of Toronto's discussions over whether or not to change their electricity supply, Murdoch investigates the death of a woman who is electrocuted at a demonstration on the dangers of AC power.

When a judge and a lawyer are both murdered, the link appears to be that they were both responsible for the conviction of a small time gangster, but the gangster died in a prison fire following his incarceration, or did he? Murdoch tries to solve the puzzle, but soon finds he's short of all the pieces he needs.

Suspicion falls on the wife of a professional boxer when he winds up dead after winning a fight he was supposed to lose, but Murdoch believes she's innocent.

Sir Arthur Conan Doyle, in Toronto on a lecture tour, visits a local clairvoyant with Murdoch. The pair find themselves led to a murder victim, freshly buried.

Murdoch investigates the death of an heir to a business only minutes before his marriage. The team discover he had recently engaged in sexual activity.

When one of the men behind a fixed dog-fighting competition is murdered, evidence points to Murdoch's estranged father as the culprit.