Ganja & Hess

The film follows Dr. Hess Green (Duane Jones), a wealthy black anthropologist who is doing research on the Myrthians, an ancient African nation of blood drinkers. One night, while staying in Green's lavish mansion, his unstable assistant George Meda (George Meda) threatens suicide. Green survives, but on discovering the body, drinks Meda's blood; he has become a vampire endowed with immortality and a need for fresh blood.