Agatha Christie's Masterpieces - Crime & Psychological Mystery

A man lost in the fog breaks into a house to escape the weather, only to find a wife standing with a gun before the dead body of her wheelchair-bound husband. Instead of turning her over to the police, he decides to help her construct a perfect alibi and frame an imaginary enemy, only to find himself entangled in a web of lies and dark family secrets where everyone has a motive to kill and get rid of the victim.