In this third book of the series, Private investigator Jim Knighthorse finds himself on the trail of his mother's killer, a cold case spanning two decades. While on the hunt, he takes on a brutal case that takes him into shark-infested waters and deep into the heart of Mexico. All the while, Knighthorse comes closer and closer to finding his mother's killer...and there's going to be hell to pay. **Acclaim for the Jim Knighthorse Series** "J.R. Rain is an ex-private investigator, and it shows; Dark Horse is another fast moving and entertaining detective story. Rain is surely destined for larger success; his fiction is fun reading." —PIERS ANTHONY, bestselling author of A spell for Chameleon and On a Pale Horse "I finished Dark Horse late last night. I enjoyed it immensely—very good story! I really liked your dialogue, which kept me chuckling each time I sat down to read the book. Add great character and scene descriptions and a well-paced plot, and you've got a gripping story indeed. I can easily see Dark Horse moving to the big screen!" —AIDEN JAMES, bestselling author of Plague of Coins and The Vampires' Last Lover "Dark Horse is one of the best books I've read in a long time! A great classic detective story with a modern twist. Unique and interesting characters (I think I'm half in love with Jim Knighthorse now!), a great plot that kept me guessing until the end, and some of the funniest lines I've read anywhere. Rain does an amazing job of blending suspense, mystery and humor in this fantastic debut novel destined for the keeper shelf." —GEMMA HALLIDAY, three time RITA nominee and National Readers' Choice award winning author of Spying in High Heels and Fearless in High High Heels