Someone Behind the Door

Quelqu'un derrière la porte

Also known as Faustdick hinter den Ohren, Кто-то за дверью, Der aus dem Dunkeln kam, Tödliche Begegnung, Um Homem Atrás da Porta

“No memory, no name, no mind: This man will act out someone else's insanity and revenge.”

A neurosurgeon with a cheating wife takes an amnesiac into his home and conditions him to believe that the cheating wife is his own and to take the "appropriate" action.