Big Red and Old Red Amlingmeyer’s dream has come The Sherlock Holmes-worshiping cowboy brothers are finally in business as professional detectives. But their fledgling A.A. Western Detective Agency faces a few challenges. Their partner, Col. Crowe, is almost as cantankerous and secretive as Old Red himself. The colonel’s daughter, Diana, insists on tagging along for the Amlingmeyers’ first assignment. And that assignment lands them smack dab in the middle of a range war—with Big Red and Old Red expected to shoot it out with rustlers rather than rustle up clues and solve a mystery. When the violence claims an unexpected victim, however, the Amlingmeyers are called upon to holster their guns (for a moment) and use their “Holmesifying” skills to track down the killer. But someone else is tracking them...someone who seems to set one ambush after another for the brothers. Will the Double-A Western Detective Agency’s first case also be its last?