The wife and mistress of the abusive headmaster of a boy's school plot and carry out his murder. They dump his body in the murky swimming pool at the school and await for it to surface. After several days, some unusual circumstances point to clues that he is not dead after all.
Tuesday Weld
as Vicky
Joan Hackett
as Claire Elliott
Sam Waterston
as Michael Elliott
Lucille Benson
as Mrs. Turner
Michael Lerner
as Jerry Steele
R.G. Armstrong
as Mr. Turner
Ed Bernard
as Coroner
William Turner
as Mr. Griffiths
Lance Kerwin
as Chip
Sandra Coburn
as Woman
Rita Conde
as Maid
Sam Henriot
as David
