Answer
Richard Roundtree starred opposite Pam Grier in the 1973 blaxploitation horror film Scream Blacula Scream. The film was directed by William Crain and starred Roundtree as Blacula, a black vampire who is revived from his grave and begins killing people in the Los Angeles area. Grier plays Tina, a police officer who is investigating the murders and becomes romantically involved with Blacula.