The Flock 2007

Evil has many faces. He has seen them all.

Directed by Andrew Lau Wai-Keung

Erroll Babbage has spent his career tracking sex offenders and his unorthodox methods are nearly as brutal as the criminals he monitors. When he links one of his deranged parolees to the disappearance of a local girl, he and his new partner must scour the S&M underground to find her before it's too late.