A former intelligence officer (George C. Scott) is tasked by the heir (Dana Wynter) to the Gleneyre estate to investigate the unusual deaths of a disparate group of eleven men on a list.

Director: John Huston.

Based upon the Philip MacDonald story.

Screenplay by Anthony Veiller.

Producer: Edward Lewis.

Composer: Jerry Goldsmith.

Actors Tony Curtis, Kirk Douglas, Burt Lancaster, Robert Mitchum and Frank Sinatra have cameo appearances.