Jess is not pleased when her parents drag her off to live on the weird little island of Lume. But then she encounters an eerie presence in an abandoned cottage, and her anger turns to fear when it begins to lead her through a series of creepy riddles. As she slowly unravels the mysteries of Lume, she finds the writings of Sebastian, a boy who lived one hundred years ago and whose life contains unsettling reflections of her own. To her horror, the dangers he unearthed in 1894 now begin to threaten Jess and her family . . . and if Jess does not unlock the riddles in time, she may lose her mother forever.

With every step he takes around the carefully manicured grounds of Minerva Hall, Jim is haunted by the ghosts of children, long dead, whom no one else can see. Urging him to "find the Seventh," the children leave him cryptic clues pointing to a devastating ancient prophecy that only he can stop from being fulfilled.

Jim befriends another boy—Einstein, who lives at the Hall. Einstein is autistic and very, very smart. If anyone can help Jim find the Seventh, perhaps he can—Einstein clearly knows more than he is saying. At the same time, the dead children seem to be leaving Jim some sort of macabre treasure trail.

If Jim doesn't figure out the clues, innocent people will die. But how can Jim find the answers while the dangers of the Hall grow ever more threatening? And even if he can, the real question is—is Jim already too late?

Linking ancient rites with modern mystery, Christine Morton-Shaw has crafted an eerie thriller that will keep readers guessing until its startling conclusion.