Quadroon [a.k.a. The Color of Truth] (1971)

Starring:

• Kathy McKee
• Tim Kincaid 
• Robert Priest
• Bill McGhee
• George Lupo
• Madelyn Sanders

Storyline
1832 New Orleans, a New Yorker, Caleb (Tim Kincaid) visits his aunt only to encounter local Land Baron Dupree (George Lupo) who offers to gamble his Black Mandingo Warrior (Bill McGhee). Caleb loses the bet, only to land a job teaching a beautiful female quadroon (Kathrine McKee) who happens to be Dupree's #1 sex slave.  Caleb must now find a way to escape with Coral before she falls victim to Dupree's nasty intentions.