A famous painting called "The Blue Landscape" has been stolen and replaced with a forgery. Inspector Mondeau teams with an Insurance agent Adelaide to investigate the theft. When a suspected artist shows up dead, they realize that they are dealing with more than just a thief.
Did You Know?
Peter Lorre's first wife, Celia Lovsky, appears as an art dealer. Divorced 10 years at the time, the two remained close friends for the rest of his life. This marks the only time they acted professionally together in film. See more
Inspector Andre Mondeau
But you know, don't you, it's against the laws of France to exploit a recognized masterpiece?