Murdoch and the gang are called to the scene of a grisly murder in the Don Valley, after a young man is found savagely beaten to death. The victim is Tom Meeks, a cadet at Fort York, who was on a rigorous training course that teaches guerrilla tactics. When another body is found with a ripped face to try and avoid identification, Murdoch investigates the military unit further and finds out some very disturbing underhand medical practices that the soldiers are unaware of.