A remote island in quarantine. A murderer on the loose. There is no escape for Inspector Jimmy Perez in Blue Lightning, the fourth Shetland mystery by Ann Cleeves. Now a BBC One drama series, Shetland, starring Douglas Henshall. Detective Jimmy Perez knows it will be a difficult return as he goes back to Fair Isle to introduce his fiancée to his parents. With the autumn storms raging, the island is cut off from the rest of the world. Then, the body of a woman is discovered at the famous bird observatory, with feathers woven into her hair. Perez has no support from the mainland and must investigate in the traditional way – on his own. He quickly realizes it is not a crime of passion but a murder with cold and calculated intent. There will be no way to escape the island until the storms subside. Thus, the killer is also trapped, waiting for the chance to strike again…