Detective Edward Malus, a troubled man in search of the missing daughter of an old friend on the mysterious island of Summersisle. The seemingly idyllic island off the mainland is home to the private community who lead a traditional pastoral life under the watchful eye of matriarch Sister Summersisle. As Malus’s quest for information pits him against the mistrusting locals and their baffling ancient traditions, he becomes immersed in an ever more perplexing mystery, amidst claims that the girl never even existed. As his search for the trust reaches its horrifying climax, Malus discovers the sickening truth behind the community’s belief system and is drawn inexorably nearer to the place where evil awaits.