This idea takes the idea of live Clue (also listed on EGAD Ideas) and adds a CSI (Crime Scene Investigator) feel. The game need not even be adapted other than how the teens are approached (I met teenagers outside at the beginning of the night and explained that a crime had been committed: someone stole the Christmas tree).
Of course the idea can be taken further and instead of naming suspects for instance, clues could describe the “perpetrator’s” shoe size or hair color. The sheet provided to each student/team could then list suspects and traits of each suspect.