While Charlie is distracted with the birth of his first grandchild, son Jimmy impersonates his father in order to investigate a murder aboard a freighter in the harbor.

On a cruise ship from Honolulu to San Francisco, the famous Chinese detective encounters four more murders while trying to figure out the murder of a Scotland Yard friend.

Mary Whitman has gone to Reno to obtain a divorce. While there she is arrested on suspicion of murdering a fellow guest at her hotel (which specializes in divorcers). There are many others at the hotel who wanted the victim out of the way. Charlie comes from his home in Honolulu to solve the murder.

Movie star Shelah Fane is seeing wealthy Alan Jaynes while filming in Honolulu, Hawaii, but won’t marry him without consulting famed psychic Tanaverro first. Tanaverro confronts her about the unsolved murder of fellow film star Denny Mayo three years earlier, and she decides to reject Jaynes’ proposal. When Shelah is found shot to death in her beach-front pavilion, Charlie Chan of the Honolulu Police investigates.