I'm searching for a movie that I watched some time ago. Unfortunately, now I have only vague memories of the plot. Most probably, it's a US movie.
So the movie is about a couple. They drive in a car. It's night and raining. I guess that they find a man on the road and decided to give him a lift. He may be hurt or just pretended to look that way.
The couple is travelling to a special place for them - either a remoted country house or even a small personal island.
I guess in the end three of them (the couple and the stranger) are in that house. And a murder occurred. I don't really remeber who murdered whom but it turned out that the stranger is not really a stranger but was paid for either by the wife or by the husband to kill the other. So it's suspens with a twisted ending.