Black Eye (1974).
Since giving up his police badge, Shep Stone has been working as private eye. One night he finds a dead body – and the killer – in his apartment. Soon Stone is enmeshed in a web of intrigue that links a religious cult, a porno ring, a missing person and the drug underground. As Stone gets closer to the answer, the bodies pile up - and the action kicks into high gear!
Directed by Jack Arnold. Starring: Fred Williamson, Teresa Graves & Rosemary Forseyth. (98mins).