Head Above Water (1996)

In this dark comedy, a supreme court judge (George) and his very young wife (Nathalie) are on vacation at her family's summer home on an island. When the caretaker, her childhood pal, Lance, takes George on a fishing trip an old flame (Kent) shows up to surprise Nathalie while she's alone. After a night of drinking Nathalie awakes to find Kent, naked and dead in her bed, just as her husband and Lance are arriving. Panicked, Nathalie hides the body but as everyone finds out it just leads to more trouble as they try to dispose of the body and eventually discover what really happened to her ex.