The third heart-pounding book in #1 NYT bestselling author Anthony Horowitz's spellbinding The Gatekeepers series.

A gate has been opened. The Old Ones have been released. And now the third and fourth of The Five — twins with a mysterious psychic bond — are joining the fight.

As fourteen-year-old telepathic twins struggle to escape the clutches of the Nightrise Corporation, one of them travels through dreams to a time when the evil Old Ones ruled and learns the role that he, his brother, and three other Gatekeepers must play to keep the world safe from the Old Ones' return.