After a ruthless inventor is killed at a convention, Murdoch's investigation is assisted by his idol, Alexander Graham Bell.

Detective Murdoch is taunted by a deranged criminal who leaves talking dolls with macabre personal messages at each crime scene.

A recording device made by Alexander Graham Bell assists in the investigation of a murder at a dinner honoring Helen Keller.

Murdoch investigates the disappearances of Nikola Tesla and Marie Curie from a conference of 20th-century innovators.

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