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D.U.I. is the fifth episode of the seventh season of Quincy, M.E., and the one hundred fifth episode overall.
With: Teri Beckerman (Nurse Wilson), Lyla Graham (Woman Passerby), Dan Moody (Officer Biondi), James Cord (Don), Ben Frommer (Man at accident scene), Eddie Garrett (Ed), Filip Field (Lab Technician), John Nolan (Bartender), Diane Markoff (Waitress)
Quincy suspects that a drunk driver who hit a pedestrian is really guilty of premeditated murder.