Knife in the Water

A couple pick up a hitchhiker on the way to their yacht. The husband invites the young man to come along for their day's sailing. As the voyage progresses, the antagonism between the two men grows. A violent confrontation is inevitab
On their way to an afternoon on the lake, husband and wife Andrzej and Krystyna nearly run over a young hitchhiker. Inviting the young man onto the boat with them, Andrzej begins to subtly torment him; the hitchhiker responds by making overtures toward Krystyna. When the hitchhiker is accidentally knocked overboard, the husband's panic results in unexpected consequences.