Book excerpt: New York Times bestselling author Gena Showalter returns with another captivating Angels of the Dark tale, as a tormented warrior is brought to his knees by the most delicate of humans…. His name is Koldo. He is scarred, powerful, his control legendary—and he lives only for vengeance against the angel who viciously removed his wings. But if he yields to the forces of hatred, he will be eternally damned. Nicola Lane was born with a defective heart, yet this fragile human shows surprising strength as demons stalk her every move, determined to end her. She is the key to Koldo's deliverance…and his downfall. Though he fights duty, destiny and his first addictive taste of desire, his toughest battle will be the one for Nicola's life—even if he has to sacrifice his own….