Gena Showalter 
Darkest Secret 

Amun – Immortal Keeper of Secrets He can manipulate your darkest toughts Chained and isolated to protect those he loves from his terrifying power, death is Amun’s only hope of release – until he meets Haidee, a fellow prisoner whose beauty and vulnerability draw him in…Haidee is a demon-assassin, raised to despise Amun’s kind. Yet how can she hate the man whose touch sparks something dangerously sensual inside her? Haidee also holds the secret to Amun’s salvation. Although to release him she must give herself over – body and soul – to a powerful adversary who has sworn to destroy her.