A strange, sprained, but sprightly fusion of The Usual Suspects and the Tragic Mulatto, Slow Burn wants badly to turn its standard neo-noir into a nuanced racial chiaroscuro. A big-shot district attorney (Ray Liotta) is closing in on a shadowy inner-city crime lord, but his biracial star prosecutor (Star Trek: Enterprise's Jolene Blalock) may be dirty. While the twists arrive with deadening regularity, the only mystery writer-director Wayne Beach really fixates on is his femme fatale's racial profile first it's fetishized, then lazily equated with treachery, and finally reduced to a mere ''trick of light.''

