On a warm September night in 1867 three women give birth to healthy sons in the village of Medcott. As the boys grow so does their friendship.
On the day they turn thirteen, the boys venture out of their village in the hope of catching a glimpse of the inhabitants of an isolated convent high on Blackthorn Hill. They follow what they believe to be a nun, but as they approach the small dark figure an inexplicable force prevents them seeing its face. It then delivers a cryptic message before vanishing into thin air.
Overwhelmed by fear they swear never to tell a soul. Thirty-five years later and far beyond the reach of Medcott the dark figure returns, and one by one they discover a terrifying legacy that connects them all to Blackthorn Hill.
