A terrified typist rushes into Mason's office pretending to be a temp. The office of the diamond importers on the floor above has been invaded. Later a partner, George Baxter, is killed, and another partner Duane Jefferson is charged.

The blonde wandering nude at the Remuda Golf Club tells Perry Mason a strange story: While she peacefully sun-bathed near the course, someone made off with her Cadillac, her trailer, and all her belongings--including her precious diary. The woman blames the police, who suspect her of having stashed away nearly half a million dollars allegedly stolen by her father, who is now in prison. She swears that both she and her father are innocent. So who is...

When clever trial lawyer Perry Mason agrees to help a young woman he finds himself searching for clues to a murder.