Destiny Bewitched (Shadows of Destiny #4)

Samantha, a witch from the wrong side of the tracks, would do anything to save her younger sister from the Underworld Games, even join the supernatural gladiator-style event. Her hope lies in the only good demon in the realm, Geo.

Even with those wicked horns, Geo is as hot as the hell she's stuck in. But fighting nasty beasts to the death is nothing compared to falling in love with a man who has no future to offer.