An inspector and an insurance investigator both have a major stake in revealing the identity of an audacious jewel thief.

The Postables discover a vase with a letter inside and must find the vase's owner. The vase's origin is suspicious and the Postables will have to decide whether to do what is right or what is legal.

Steve McTear, a gifted fencer, tries to distance himself from the violent criminal activities of his family. When he finds himself pursued by gangsters, he decides to take a job as a fencing coach at a remote and exclusive school.