Simon Templar is hired by a friend in the book publishing trade to protect one of his stars, a secretive recluse named Amos Klein who writes a popular (and lucrative) series of adventure novels about a manly and suave spy.
Called in to investigate the murder of a model, Chief Inspector Birkett and Sergeant Saunders soon discover that the victim had been leading somewhat of an immoral life.
Sailor Albert gets a message from the Navy saying he can't marry for certain unexplained legal reasons. Everyone, including his domineering mother-in-law to be, jumps to the conclusion that there must be another woman involved.