A couple of years ago, U.S. audiences were riveted by Red Riding Trilogy, a production for Britain's Channel Four exploring a history of crime, of both the organized and the darkly obsessive varieties, twisting its way through a community in the North of England over the span of a decade. The trilogy was a unified work pursuing a narrative involving a teeming cast of characters, yet each of the three feature-length components was handled by a different director, and each director took his own, quite distinct stylistic approach to his part of the saga. Much the same is true for Dreileben, a 2011 triptych for German television that played this year's Vancouver International Film Festival......