Insurance detective Steve Hastings is sent by his company to investigate the disappearance of a fellow agent. His first lead is the agent's fetching sister, Victoria, whom he trails to Mexico City. After charming his way into her confidence, Steve helps Vicki unravel the mystery.
Seeking a divorce from her absentee husband, Mimi Glossop travels to an English seaside resort. There she falls in love with dancer Guy Holden, whom she later mistakes for the corespondent her lawyer hired.
New York schoolmarm Hildegarde Withers assists a detective when a body of unscrupulous stockbroker Gerald Parker suddenly appears in the penguin tank at the aquarium.