Baffle, a valuable race owned by a Texas millionaire, falls in a California stakes race. Both the horse and jockey are killed. Investigating for the insurance company which covered the horse, Robin learns that the eastern bookies and the Chicago lay-off houses took a terrific beating on the race. This leads Robin to the conclusion that Baffle was unsound when he entered the race, and that the race was rigged by Baffle's trainer working with the track veterinarian and the crooked jockey who rode the second choice. In proving his case, Robin learns that the trainer was innocent and in the final showdown is able to hang the crime on the actual guilty party, Baffle's owner.