Improvvisamente was released in the year 1972。Improvvisamente is also called as The Nightcomers, Sanansaattaja, Loch in der Tür, Kauhujen yö, un uomo nella notte, Corrupteur, Besatta, Anthropos tis nychtas, Últimos juegos prohibidos。

Prequel to the Henry James classic "Turn of the Screw" about the events leading up to the deaths of Peter Quint and Ms. Jessel, and the the slow corruption of the children in their care.

Improvvisamente actors and actresses include Marlon Brando, Stephanie Beacham。