Sherlock Holmes is at the stables of Colonel Ross in Dartmoor. He has an especially important mission to investigate the disappearance of Silver Blaze, titular horse and a famous winner. It is not enough that the champion is gone, but his trainer, John Straker, has apparently been murdered. After carefully examining the crime scene, Holmes follows the horse’s footprints to the neighbor stables, where he tries to get more information from Silas Brown.