From the liner notes

Acclaimed director Philip Ridley (The Reflecting Skin) returns to the screen after a fourteen–year absence with this chilling tale of supernatural forces. Jamie Morgan (Jim Sturgess, Across the Universe) is a talented young photographer whose disfiguring birthmark makes him feel an outsider in the rough patch of East London he calls home.

Developing pictures he's taken in an abandoned lot, Jamie sees a hooded figure peering from behind a window. Investigating, he stumbles into a horrific world of reptilian monsters posing as street gangs, violence inflicted on the most innocent, and a demon (Joseph Mawle) with the power to offer Jamie everything he's ever dreamed of—at a deadly price.

This dark tale offers echoes of both Donnie Darko and Michelangelo Antonioni's Blow-Up. The superb British cast includes Ruth Sheen (Vera Drake), Timothy Spall (The King's Speech), Eddie Marsan (Happy-Go-Lucky), and Clémence Poésy (Harry Potter and the Deathly Hallows).