Summary: In this ponderous French mystery-drama, based on an Ellery Queen story, blackmail would seem to be the least of the problems of Charles (Anthony Perkins). His adoptive father Theo (Orson Welles) has a madwoman for a mother, and a gorgeous woman of Charles' age (Marlene Jobert) for a wife. In fact, Charles is deeply attracted to her. In addition, his father encourages the whole family to dress in '20s clothing, which makes them all feel out of place. (allmovie.com)

Poster submitted by Gauntlet

AKA: La décade prodigieuse

Genres: Drama, Mystery

Country: France, Italy

Directed By: Claude Chabrol

Written By: Eugène Archer, Frederic Dannay

Starring: Michel Piccoli, Marlène Jobert, Orson Welles, Anthony Perkins, Guido Alberti

More information at the Internet Movie Database