Taking on bloodthirsty supernatural monsters is how Caliban and Niko Leandros make a living. But years ago—before they became a force to be reckoned with—the brothers were almost victims of a very human serial killer.

Almost.

Unfortunately for them, that particular depraved killer was working as apprentice to a creature far more malevolent—the legendary Spring-heeled Jack. He's just hit town. He hasn't forgotten what the Leandros brothers did to his murderous protégé. He hasn't forgotten what they owe him.

And now they are going to pay...and pay...and pay....