On a summer evening, in the seemingly idyllic suburb of Hollington Drive, 10-year-old Alex Boyd is declared missing. As grief tears through the community, sisters Theresa and Helen fight to hold their lives and their families together. Secrets and lies begin to surface as long-held fa�ades falter.

It's 1939 and Europe teeters on the brink of war. Ten strangers are invited to Indian Island, an isolated rock near the Devon coast in southern England. Cut off from the mainland, with their generous hosts Mr and Mrs U.N. Owen mysteriously absent, they are each accused of a terrible crime. As each member of the party starts to die one by one, the survivors realize that one of them is a killer and start to turn on each other.

Elizabeth and Darcy, now six years married and with two young sons, are preparing for the lavish annual ball at their magnificent Pemberley home.