Dark Horse by Tami Hoag

Dark Horse Book 1 of the Elena Estes series by Tami Hoag In a trailer in a Florida swamp, time is running out for eighteen year-old Erin Seabright. A pawn in a kidnapper's terrifying game for a ransom no one can pay, her last hope is a washed-up ex-cop who has already lost it all-not once, but twice. The wealthy world of the Palm Beach horse set seems a long way from a cop's world in the narcotics division. A lifetime ago, undercover sheriff's detective Elena Estes worked the mean streets and BackTop alleys, living by her wits and playing the long odds until she took one risk too many. Now Estes lives on the ragged edge of lost hope and self-hatred, hiding from the past and believing she doesn't deserve to have a future. But the past is about to come back with a vengeance, and the future is about to become a race between life and death. A young woman is missing and her twelve year-old stepsister comes to Estes for help. No one but serious, studious Molly Seabright seems concerned about what's happened to her troubled older sister. But Molly is convinced Erin is in danger. Estes has no P.I. license, no interest in a new career, and no desire to break her self-imposed exile. But the more she learns about the people Erin Seabright was involved with, the more her long-dormant cop instincts come back to life. Women Sleuth Romance Romantic Suspense Thriller