Dr. Black and Mr. White on AllMovie

Director William Crain's entertaining follow-up to Blacula stars Bernie Casey (formerly of the L.A. Rams) as Dr. Henry Pride, a prominent black physician who partakes of an experimental formula for the treatment of liver disease -- which turns out to be a close chemical cousin to Dr. Jeykll's notorious concoction. The drug transforms Pride into a homicidal white-skinned predator who goes out on murderous nocturnal rampages, mainly targeting prostitutes on the street corners of the Watts district; dangerously imposing cop Ji-Tu Cumbuka investigates. Known also as The Watts Monster and Dr. Black, Mr. Hyde, this film contains little of Blacula's Hammer-inspired atmosphere, choosing to adopt a standard low-budget urban-action style (with dialogue to match) until the King Kong-derived climax.