Seventeen-year-olds Colin Kelly and Molly Fitzpatrick long to become Keepers, guardians of their people against the ghostly creatures that lurk in the wilderness beyond the city walls. But it’s not just the creatures that haunt Molly and Colin’s world: five years ago, Molly’s father murdered Colin’s parents. Colin’s bitterness, as well as the influence of his manipulative mentor, are forging him into anything but a worthy Keeper. As for Molly, though she strives to overcome her family’s history, she is caught up in her twin brother’s ruinous maze of theft and deceit. Due to their respective missteps, Molly and Colin end up on-the-run together. In order to survive the winter wilderness beyond the walls, they must overcome their troubled history and fight for each other’s lives.

Seventeen-year-olds Colin Kelly and Molly Fitzpatrick long to become Keepers, guardians of their people against the ghostly creatures that lurk in the wilderness beyond the city walls. But it’s not just the creatures that haunt Molly and Colin’s world: five years ago, Molly’s father murdered Colin’s parents. Colin’s bitterness, as well as the influence of his manipulative mentor, are forging him into anything but a worthy Keeper. As for Molly, though she strives to overcome her family’s history, she is caught up in her twin brother’s ruinous maze of theft and deceit. Due to their respective missteps, Molly and Colin end up on-the-run together. In order to survive the winter wilderness beyond the walls, they must overcome their troubled history and fight for each other’s lives.