"Unnecessary" and "unrewarding" are two of the terms which come to mind when considering the merits -- meager such as they are -- of the third in the Underworld series.
Story
Taking the bare bones of The Ten Commandments and Romeo and Juliet, this pedestrian tale explains the origins of Lucian (Michael Sheen), a "Lycan" (read: lycanthrope), who served the vicious vampire king Viktor (Bill Nighy) but would eventually lead a revolt of his fellow Lycans (read: slaves) after his illicit affair with
