In the Hallows, where the natural and the supernatural co-exist - not always peacefully - desperate times often call for unorthodox measures. But bounty hunter-witch Rachel Morgan did the absolutely unthinkable to save the lives of her friends: she willingly trafficked in forbidden demon magic. And now her sins have come home to haunt her.

As Rachel hunts for the truth behind a terrifying murder, the discovery of a shocking family secret is about to throw her entire life into question. And the long-lost ancient knowledge she seeks resides in the demonic ever-after.

But there are some lines that should never be crossed - like the one Rachel Morgan's stepping over...again!