After a disastrous car crash outside New York City, Ridley Duchannes—Dark Caster, Siren, and bona fide bad girl-has gone missing. Her wannabe rocker and quarter Incubus boyfriend, Wesley "Link" Lincoln, was driving, and when he comes to, Ridley is nowhere to be found. The only clue is the giant raven emblazoned on the hood of the truck that hit them, which can mean only one thing: Silas Ravenwood is back. And he has Ridley.

Determined to find her, Link reunites with old friends John Breed and Liv Durand, his New York bandmates, and the mysterious Lennox Gates—who has his own reasons for tracking down Ridley. Together they travel through the Caster Tunnels and the Deep South to New Orleans, where they uncover the truth about the infamous Ravenwood labs and exactly what Silas has been doing within those walls. By the time Link and his friends reach Ridley, she is no longer the Siren they know and love. She's something new. This time, love might not be enough to save them.

In this sequel to Dangerous Creatures, the bestselling spin-off of the #1 New York Times bestselling Beautiful Creatures novels, coauthors Kami Garcia and Margaret Stohl deliver an intoxicating blend of magic, suspense, and danger.