Sarah Lancashire returns in the acclaimed BBC thriller written by Sally Wainwright. No-nonsense police sergeant Catherine Cawood is back heading up her team of dedicated police officers in the Calder Valley in West Yorkshire. While on duty, she makes a gruesome discovery – a body. 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.妍妍扭头看了看我，微微点了点头，意思是说要行动了，然后慢慢从裤子口袋里面拿出他刚刚从包里拿的一个袋子，把袋口的绳子解开，很快的一脚把门踢开，用手一拉房间门口的电灯拉线，冲倒女孩子的床边就从袋子里面抓起白色的一种粉末撒了起来，撒完床上又在房间别处撒，到处撒。