Ganja and Hess

Ganja & Hess is a 1973 experimental horror film written and directed by Bill Gunn and starring Marlene Clark and Duane Jones. The film follows the exploits of anthropologist Dr. Hess Green (Jones) who becomes a vampire after being stabbed by his intelligent, but unstable, assistant (Gunn) with an ancient cursed dagger. Green falls in love with his assistant's widow, Ganja (Clark), who learns Green's dark secret.