Daniel Pratt, the president of a power company that employs direct current generation, puts on a show to highlight the dangers of its rival, alternating current generation.Alice Howard, who pulled the switch lever with the intention of electrocuting the dog, is electrocuted.Detective Murdock discovers the tampering on the switch box.

A trunk containing a nude corpse and a note to Murdoch's boss, Brackenreed, reveals that the victim is Percy Pollock, a former prosecutor and lawyer.The victim is Percy Pollock, a former prosecutor and lawyer, who had once worked with Brackenreed to send many criminals to prison.

The gunned-down body of boxer Amos Robinson is found, and his wife Fanny, who was holding a gun beside the body, is taken into custody.The killer shot him in the heart at point-blank range, which should have resulted in a significant amount of returned blood, but the blood on Fanny's dress was different, so she intuits that it was not the killer.

Conan Doyle, a writer whom Murdoch admires, arrives.Doyle takes Murdoch to a seance, where he hears an unexpected spirit voice from a medium.I have been murdered and buried.When he goes to the place where he says he is buried, he finds that a woman's body is really buried there.

On the day of the wedding, the groom, Wendell, is found dead.An autopsy reveals that he was gay.His family knew this and tried to force the marriage by offering him an inheritance.The bride, Eunice, also testifies that she saw Wendell and the pastor kissing, but insists that it was a mistake.

John Delaney's body is found in the river in what appears to be a robbery-homicide. Also on the other side of the river, Detective Murdock's father, Harry Murdock, is found.He was taken into police custody because there were signs of a struggle on his hands.