Geheimnis der fliegenden Teufel was released in the year 1980。Geheimnis der fliegenden Teufel is also called as Without Warning, Terreur extraterrestre, Llegan sin avisar, It Came Without Warning, Ilman varoitusta, Horror caccia ai terrestri, Alien Warning, Alien Shock, Alien Encounters。

Geheimnis der fliegenden Teufel actors and actresses include Darby Hinton, Jack Palance, Kevin Peter Hall, Larry Storch, Martin Landau。