When an ancient, powerful being from Hell leaves a trail of burned bodies in Ohio, Sam, Dean, and Ruthie naturally go to stop it-never suspecting that an old enemy has resurfaced. But this new adversary is different than any they've hunted yet, and their arrival plays right into his hand. And while they now have more to live for than ever before, they also have much more to lose. -Part IV/conclusion of the Wayward Son series