An all-star cast headlines this witty mystery thriller about a movie producer who invites six friends to a cruise aboard his yacht the Sheila named after his late wife who died in an unsolved hit and run accident a year ago that day. As the ship sets sail those aboard begin to realize that their host has more than innocent parlor games in mind as he pits each against the other taunting them with the knowledge that his wife's killer is among them. Written by Oscar and Pulitzer Prize winning composer and lyricist and puzzle fanatic Stephen Sondheim (Dick Tracy West Side Story) and actor-writer Anthony Perkins (Psycho). Directed by Oscar nominee Herbert Ross (Boys on the Side Steel Magnolias) and starring Raquel Welch (Naked Gun 33 1/3) Oscar winner James Coburn (Maverick) Richard Benjamin (Goodbye Columbus) and Academy Award-nominees Dyan Cannon (Heaven Can Wait) Joan Hackett (Only When I Laugh) and James Mason (The Verdict).