Someone is killing demons–someone other than the Aegis demon slayers, anyway. Now Eidolon, a doctor at Underworld General as well as a demon whose instincts to mate are growing stronger, must pair up with a sexy Aegis Guardian named Tayla Mancuso to learn the truth behind the killings. But Tayla has her own agenda. Her assignment is to find a way to destroy Underworld General. When she falls for Eidolon, who has shown her erotic pleasures she’d never dreamed of, she must face the horrors of her past and choose between becoming one of the very creatures she’s hunted–or death.