To become a king of the underworld at long last, William must resist an irresistible beauty&;or a curse will ensure his end&;

A merciless prince feared by all&;

Cursed by a vengeful witch, William of the Dark will die if he ever falls in love&;murdered by the woman who steals his heart. His lone shot at redemption is a book filled with indecipherable code. Break the code, break the curse. Now, centuries later, he&;s condemned to a string of one-night stands&;until he finds the only woman in the worlds able to set him free.

A rare creature of myth and power&;

One of the last living unicorn shifters, Sunday &;Sunny&; Lane works from the shadows as a cryptanalyst, on the run from assassins and poachers. Then the darkly seductive William abducts her, holding her captive in Hell. The closer they get, the more she hungers for his touch&;and the stronger a mystical desire to kill him becomes&;

But which desire will prove stronger&;lust or death? And who will give in first?