A Kiss of Shadows is the first book of the Meredith Gentry series.
In Los Angeles, California, Meredith Gentry is a faerie with mixed blood undercover at the Grey Detective Agency. She is living in a time when faeries are common knowledge to humans, but she still prefers to be undercover. She is assigned to a case involving false faeries and faerie rituals. They realize that in a secret faerie society, people are using Branwyn's Tears, a dangerous oil substance that is used as an aphrodisiac and date rape drug--it can turn a human into a sidhe and a sidhe into a sexual slave. While investigating further, Meredith's secret of being a faerie herself is revealed.