Claire Connolly is a Susceptible who became infected with magic when the Veil separating humanity from the Outlands fell. Magic can easily absorb and destroy Susceptibles, and if Claire's secret is revealed, she will be locked in a fenced-in area called Devil's Island along with the other Paranormals remaining in the city. Bounty hunter Liam Quinn learned Claire's secret, but did not turn her over to the authorities. Together, they saved New Orleans from the resurgence of magic that nearly destroyed it. But now a dangerous cult is rising, and Claire, Liam and their magical allies inside the high walls of Devil's Island will have to fight the threat before the magic takes them both...