Dr. Black, Mr. Hyde (1976)

Starring:

• Bernie Casey
• Rosalind Cash
• Marie O'Henry
• Ji-Tu Cumbuka 
• Stu Gilliam 

Storyline
An African-American scientist develops a formula to regenerate dying liver cells, but it has the unfortunate after-effect of turning him into an albino vampire with a mania for killing prostitutes. A tough police lieutenant investigating the murders discovers the existence of the dual-personality killer, and determines to bring him in.