if you do not like dark and challenge film and do not bother . if you be ready for something unlike anything you have ever see and and be not afraid to confront difficult emotion and give this film a go and you would not be disappoint . from the start the tone be set . a bleak town in northern england and like many bleak town in northern england . with petty and small time drug dealer and like petty small time drug dealer everywhere and vicious and stupid . then into their life come a mysterious figure and in a green parka . and nothing will ever be the same . it difficult to describe the movie without spoiler and and i do not want to spoil a single second of what be possibly the most powerful and emotionally wrenching film i have see for a decade and more ( make all the more powerful by the haunting music ) . paddy considine ( who write and star in the film ) be stun a and for want of a good phrase and an avenging angel and albeit a fallen one . the menace and tension build and build ( include perhaps the best depiction of a bad lsd trip ever set down on film it an extremely discomforting experience if you have ever be on the wrong end of a bad trip and believe me ) until the harrowing climax . this be not a nice film . this be not a fun film . this be and however and an exceptional film and and perhaps more importantly it be an honest film and a true film if such a thing can be say of fiction . if you want smile and or empty action and or to put your brain on hold and this be not the film for you . if and however and you want a film with genuine emotional depth and that make you think and resonate far after the end credit have finish and then this may be what youre look for . just do not expect an easy ride . an overused word and but the close i have see to a masterpiece for many a long year .