Thrilling series starring Brian Donlevy as a US Government Agent who travels the globe investigating threats to National Security!

THE CABOOSE STORY: Steve is sent to Tokyo to get evidence on a former flame who's suspected in an outbreak of sabotage. He finds Marta as charming and dangerous as ever; an agent and a soldier who figured out she was the ringleader are quickly murdered. Once Steve accuses her of sabotage and murder, he almost becomes her next victim.