A young Boston family is torn apart—into parallel dimensions—in this dark urban fantasy by the authors of The Map of Moments.

From Beacon Hill to Southie, Boston is a place of close-knit neighborhoods. But as Jim Banks and Trix Newcomb soon learn, it is also a city divided, split into three separate versions of itself by a mad magician once tasked with its protection.

Jim's happy family includes his wife Jenny, their daughter Holly, and Jenny's best friend Trix—who has secretly been in love with Jenny for years. But when Jenny and Holly inexplicably disappear, they leave behind a Boston in which they never existed. Only Jim and Trix remember them. Only Jim and Trix can bring them back.
With the help of Boston's Oracle, an elderly woman with magical powers, Jim and Trix travel between the fractured cities in search of Jenny and Holly. But if Jim and Trix fail, the spell holding the separate Bostons apart will fail too, and the cities will collide in a cataclysmic implosion. Someone, it seems, wants just that. And that someone has deadly shadow men at their disposal.