Ho sposato un mostro venuto dallo spazio was released in the year 1958。Ho sposato un mostro venuto dallo spazio is also called as I Married a Monster from Outer Space, Monstres sur notre planète, Me casé con un monstruo del espacio exterior, Jag är gift med en utomjording, J'ai épousé un monstre, Flickan och monstret。

Aliens from Outer Space are slowly switching places with real humans -- one of the first being a young man about to get married. Slowly, his new wife realizes something is wrong, and her suspicions are confirmed when her husband's odd behaviour begins to show up in other townspeople.