Summary: A man poses as husband to his wife's best friend for one day that could turn into a lifetime. (TCM.com)

Poster submitted by Gauntlet

Genre: Comedy

Country: USA

Directed By: David Swift

Written By: Jack Finney, James Fritzell

Starring: Jack Lemmon, Edward Andrews, Mike Connors, Dorothy Provine, Romy Schneider

More information at the Internet Movie Database