An escaped convicted murderer hides out at a New York wax museum where he hopes to get plastic surgery, which will help him revenge himself on Charlie Chan.
Eccentric scientist Harper lives in a spooky mansion with all the trimmings: hidden lab, secret panels, inscrutable butler, and greedy relatives with unusual talents. When Harper seems to be murdered, Charlie Chan (with the uninvited help of No. 4 son) tries to answer such questions as Where’s the body? How can a dead man walk? And how can a secret murder be done in full view of detectives and witnesses?
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.