After uncovering and destroying a Necromancer plot to take over Skye Priosún, Jess and Finn are united at last and longing to move on with their life together. But the Durupinen world has other plans. An enigmatic rune keeps revealing itself to Jess - in artwork, in dreams, and even scrawled upon the ancient stones of the Geatgrima at Fairhaven. No one can identify it, but its warning is clear: Something dangerous is coming, a revelation that could end the Gateway system forever.

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.

For hundreds of years, the Durupinen have carried the power of the Gateway in their bloodlines. Now, a dire warning from the past might mean that power must come to an end. Jess Ballard has often considered her gift a curse - but now it may truly become one, unless she can convince the leaders of the Durupinen world to restore the power of the Gateways where it rightly belongs. The Durupinen have always considered themselves a force for what is good in the world, but has the intoxication of power left them unable to distinguish between what is right and wrong?

Spurred by the injustices that nearly destroyed their family, Jess and Hannah Ballard are preparing to win back a seat on the powerful Durupinen Council. The odds are stacked against them, but that's never stopped them before. But as Hannah faces the harsh realities of political intrigue, Jess must face a frightening new reality of her own.

Once every five years, the Northern Clans of the Durupinen gather at Fairhaven Hall. There, at the ancient castle, surrounded by the very spirits they are bound to protect and serve, the clans settle disputes and shape the laws that govern the Gateways to the spirit world. For the first time, Jess and Hannah Ballard have to represent their clan. It is an awesome responsibility - a great honor...and they are sure it's going to be the most boring week of their lives.