A young beautiful woman runs out of an abandoned restaurant, gets into a car, drives at breakneck speed and crashes into a pole. Tom Krapp, a successful and attractive man, returns after work to his beautiful mansion and discovers that Karen, his wife, is not home . Everything indicates that she was here very recently and left the house in a terrible hurry. There is a knock on the door: a policeman comes, he tells Tom that his wife had an accident and is now in the hospital. Karen received a concussion and cannot remember what happened to her. Soon she returns home, and fragments of memories gradually begin to emerge in her head. Karen is sure that someone was sneaking into their house - someone she was very afraid of. Meanwhile, a body is discovered in an abandoned restaurant. Now Karen simply needs to remember that evening, because she is beginning to be suspected of murder...