Cry of the Werewolf
Young woman raised by gypsies is actually daughter of a werewolf. She starts killing those who know about her.
Al Bridge, Al Thompson, Barton MacLane, Blanche Yurka, Frank O'Connor, Fred Graff, Fritz Leiber, George Eldredge, George Magrill, Harry Semels, Hector Sarno, Ivan Triesault, John Abbott, John Tyrrell, Milton Parsons, Nina Foch, Osa Massen, Ray Teal, Robert Williams, Stephen Crane, Tiny Jones