Black Eye (1974)

Storyline:

Black Eye (1974) Fred Williamson stars as Stone, a Los Angeles-area private eye. After a movie star's funeral, the star's signature walking cane disappears. Stone discovers that the cane is somehow connected to a string of murders. Stone's investigation takes him onto a porn movie set and into a religious cult. A major subplot involves Stone's intermittent relationship with a young bisexual woman, and the tension therein.