When a priceless relic disappears from Canterbury Cathedral, ARKANE - the agency tasked with protecting the world from supernatural adversaries - fears the worst... and sends its best.
Now, ARKANE agents Morgan Sierra and Jake Timber are on the job. Across Europe, through historical cities and into spectral forests forgotten by time, Morgan and Jake will follow the bloody trail of hidden relics wherever it leads, whatever the cost.
But even they aren't ready for what's coming.
Their hunt will lead them beyond danger, beyond darkness to the shadowed heart of a hidden citadel where lives an evil unlike any they've ever seen... and to a dark choice that will change them both forever.
NY Times and USA Today bestselling author J.F. Penn invites you to brave her most thrilling adventure yet. A world of the strange. A world of the supernatural. A world... of the ARKANE.