The Key (French: La clef) is a 2007 French thriller film directed by Guillaume Nicloux.
Eric Vincent, thirties, leads an uneventful life alongside his wife Audrey. While the couple talking about having a child, the young man was contacted by a friend of his biological father he never knew. Eric learns that his parent is dead and he can come and collect the ashes of his body he wants. Reluctant at first, he eventually accepted. This was the start of a diabolical plot which is several stories collide, several destinies ...