Here's the official book blurb:
Christopher “Kit” Locke is haunted by his past mistakes and lives on danger’s edge, not caring if he lives or dies. He will leave that choice to Fate. Intrigued by the spirited Beth, he is drawn from his spiraling descent and is enlisted to help steal an evil artifact, the Viper’s Eye, a demonic soul-stealing jewel.
While the Archangel and the Duke of Hell battle it out, both Beth and Kit must also fight evil. When the stone seeks Kit's soul can Beth's love keep him from falling victim to the Viper's Eye or will she lose Kit to Hell's fire?