“Officer Downe” (** out of four) was a murky adaptation of the graphic novel series about an unstoppable police officer (Kim Coates) programmed for justice and to clean up the streets. Elsewhere, a rookie cop (Sam Witwer) begins to discover a conspiracy within the department involving experiments and dead officers. Stylish, violent, and absolutely empty action melodrama owes an obvious debt to “Robocop” and “Judge Dredd” but remains watchable. Dazzling cinematography by Gerardo Madrazo easily outclasses the script and acting.