This is about a pilot is is flying a widow and the coffin of her husband and the plane crashes and they get stranded on an island. The story is how they survive and their struggle to find a way out. The twist is when the lady finds out that the coffin is empty. The climax is when they realize the person wanted to kill them is the ladies husband.
That is all that I can remember, I hope you can help me with the name of this movie.