Hexen bis aufs Blut gequalt (released in the U.S. in 1972 as Mark of the Devil), the 1970 Michael Armstrong West German exorcism gore horror thriller ("Positively the most horrifying film ever made"; "Guaranteed to upset your stomach"; "the first film rated V for violence") starring Herbert Lom, Reggie Nalder, Olivera Vuco, Udo Kier, Herbert Fux, Michael Maien, Ingeborg Schoner, Johannes Buzalski, Gaby Fuchs, Gunter Clemens, and Reggie Nalder.