Actor Nate Parker's long-awaited biopic on Nat Turner, the African-American slave who led the most successful slave rebellion in American history, has the makings for one of the breakout hits of this year's festival (the title's play on the infamously racist silent film will certainly turn heads). Parker ("Beyond The Lights," "Non-Stop") wrote, directed, and stars as Turner, in an ambitious endeavor that could pay off big time.