Lord Lister No. 0122: De wedrennen van York

The story follows a resourceful gentleman and his secretary as they travel to York to investigate a persistent betting fraud at the annual horse races. Newspaper accounts describe a secret bettors club that manipulates wagers by encouraging crowds to back one mount, then prompting late switches and using collusion with jockeys so a different horse wins, leaving many ruined while police struggle to prove the scheme. Driven by curiosity and a desire to stop the deception, the protagonist studies reports, confronts official suspicion, and prepares to infiltrate the racing scene to expose those behind the manipulations.