Directed by Elliott Lester, Blitz (2011) stars Jason Statham as a tough London detective pursuing a serial killer targeting police officers. Based on the novel by Ken Bruen, the film follows a joint investigation as media attention intensifies around the murderer known as “The Blitz.” The story blends crime investigation with violent urban confrontations.

Från IMDB:
A tough cop is dispatched to take down a serial killer who has been targeting police officers.