Bela Lugosi as Dr. Lorenz

Luana Walters as Patricia Hunter

Tristram Coffin as Dr. Foster

Elizabeth Russell as Countess Lorenz

Minerva Urecal as Fagah

Angelo Rossitto as Toby

Frank Moran as Angel

George Eldredge as Mike

Vince Barnett as Sandy

Kenneth Harlan as Editor Keenan

Joan Barclay as Alice Wentworth

Gwen Kenyon as Peggy Woods