On The Head Of A Pin

When "Sufi chick" spa owner Núr Lucas hires him to locate the angel of despair, private detective C. R. Oliver thinks he's taking another safe and easy missing-person case, but he soon finds himself swept into the otherworldly schemes of the Seven Sins, the emotional manipulation of his own client, and the temptations of a young fallen angel who clues him in to the secret for cheating Death Herself.