It’s another bright and sunny day in Aurora, Michigan…when a mysterious building collapse kills sixty-seven people.

It's been four months since the devastating battle on Primrose Avenue, and DSI still has its hands full. The local ICM chapter is now unstable, no leader to corral its members. The werewolves are moving in strange ways, like they're keeping secrets. And there's a traitor inside DSI, waiting to strike again.

Cal Kinsey and his team, now back on the job, are desperately searching for the answers they need to restore balance in the supernatural community. But so far, they've had little success.

Then, to make matters exponentially worse, a major Aurora convention center collapses without warning, killing dozens and injuring hundreds more. With all signs pointing to a supernatural terrorist attack, Cal and his team are thrust back into the danger zone once again. And this time, they're playing for keeps.

Because according to the riddle-filled letter that arrives on DSI’s doorstep, addressed to one Captain Nicholas Riker...the destruction of Aurora is only just beginning.