The Darkest Secret- Gena Showalter

Lords of the Underworld #7

"Keeper of the demon of Secrets, Amun can manipulate the darkest thoughts of anyone nearby. But when the immortal warrior is chained and isolated to protect those he loves, death is his only hope of release--until he meets Haidee, a fellow prisoner whose beauty and hidden vulnerability draw him into a reckless test of his loyalty"--Publisher marketing.