Series 1 sarah lancashire stars as catherine cawood, a police sergeant in a small town in yorkshire where drunkards, drug addicts and teenage pregnancies are a way of life. Her world is turned upside down when the man she believes is responsible for her daughter's death tommy lee royce is released from prison. She is convinced tommy is dangerous and it's only a matter of time before he hurts someone else series 2 catherine cawood is back heading up her team of dedicated police officers in the calder valley. A body is discovered and the victim's injuries bear a striking similarity to a string of other murders over the previous few months, suggesting a serial killer is on the loose. But the case becomes even more shocking when it emerges that catherine knows the victim something that could have serious repercussions for both herself and her family. Special feature cast crew interviews running time 700 minutes region region 2 subtitles english release date 28 mar. 2016