This is book 5 in the Lords of the Underworld series and I enjoyed the story between Aeron & Olivia. An Angel - demon assassin has been sent to kill Aeron or has she ? Olivia claims to have fallen from the heavens giving up immortality because she just couldn't bear to harm him. But trusting and falling for Olivia will endanger all of them. Now, with an enemy hot on Aeron's trail and his faithful demon companion determined to remove Oliva from his life, Aeron is trapped between duty and consuming desire.