Demon Unleashed (Stealth Guardians #7)

Zoltan, the ruler of the demons, makes a final attempt at destroying the Stealth Guardians once and for all. This time, he will stop at nothing, and-in disguise-he seduces Enya, the Stealth Guardian female he's been lusting after for a long time. However, he must realize that even a demon as powerful as Zoltan can be brought to his knees...