As Jess Ballard is struggling to adjust to her new life in London without Finn Carey to watch over her, she has thrown herself into her role as a tracker, using her gift to communicate with and help as many spirits as she can. But just as she begins to settle into a new city, the city reveals a mystery too intriguing - and dangerous - to ignore. Something sinister is drawing restless spirits to a tiny old museum, luring them with a promise of salvation it cannot deliver upon.

In the wake of their terrifying escape from Fairhaven Hall, sisters Jess and Hannah Ballard find themselves on the run, pursued by the two most powerful groups in the history of the spirit world. On one side, the Durupinen, determined to capture the girls and prevent their role in an ancient prophecy that promises to destroy them and unleash the spirit hordes on the earth. On the other side, the Necromancers, ancient enemies of the Durupinen, hell-bent on bringing the same prophecy to fruition. When the girls are betrayed and one of them falls into the Necromancers’ hands, both face decisions with cataclysmic consequences.

Two sisters, haunted by more than their past... Just weeks after discovering each other’s existence, Jess and Hannah Ballard arrive at Fairhaven Hall, where they will learn the clandestine ways of the Durupinen, an ancient sect of women who control the Gateways between the worlds of the living and the dead. Though they are considered outcasts by most of their classmates, Jess and Hannah are determined to learn what they can to fulfill their responsibility to the many ghosts that haunt them. But danger, it seems, has followed them as closely as a shadow to their new home. 

White Haven has a history of witchcraft, but the locals don't know that there are real witches living among them, and Avery is one of them. When she has a forbidding premonition and finds a series of clues all hinting at the mysterious past of her hometown, perched on the Cornish coast, Avery realizes that the witches are missing a vital part of their history.

It was summer in the mountains when five small children vanished from their nursery school picnic. The heat was stifling that day, the tinkle of an ice-cream van in the air.... Three-and-a-half years later, in the dead of winter, the children are returned to their families...one by one. All except for Ivy - the granddaughter of Homicide Detective Kate Wakeland. The other four children say Ivy is dead.