Herbert Ross directs this murder mystery thriller written by Anthony Perkins and Stephen Sondheim. A year after Sheila (Yvonne Romain) is killed in a hit-and-run accident, her widower Clinton Green (James Coburn) invites everyone who was present at his home on the night that she died for a trip on board his yacht. There, they begin to play a game with deadly consequences, for more than one person present has secrets that they will do anything to protect...