This Universal "monster rally", an immediate sequel to House of Frankenstein, would seem to have been deliberately designed as the final entry in the studio's B-horror cycle. Onslow Stevens plays psychiatrist Dr. Edelman, who suddenly has a thriving business when two of Universal's "fright" personalities come calling. Count Dracula (John Carradine) wishes to be weaned away from his vampiric tendencies, while Lawrence Talbot (Lon Chaney), aka the Wolfman, wants to be cured of his werewolfism. Edelman does his best to help, simultaneously attempting to bring the Frankenstein monster (Glenn Strange) back to life. Unfortunately, Edelman inherits the madness, killer instincts and other antisocial habits of his celebrated patients. Only Lawrence Talbot manages to escape from Edelman's lab unscathed, ambling off into the sunset with heroine Militza (Martha O'Driscoll). Universal contract starlet Jane Adams, perennially cast as unfortunate young women with physical afflictions, plays Edelman's faithful hunchbacked nurse.
by Hal Erickson synopsis