Dead Reckoning
A doctor, his wife and her lover make a voyage on the yacht of the doctor. But when the weather turns very bad they have to stop the sea cruise and seek refuge on a lonely island. There begins a deadly game in which the lover and the wife try to kill the husband...
Directors: Robert Michael Lewis
Writers: Andie McCuaig, Les Green, Neill D. Hicks, Robert Michael Lewis
IMDB: tt0099375