Jabez Wilson, a pawnbroker, consults Holmes about a job, gained only because of his red hair, which took him away from his shop for long periods each day; the job for to simply copy the Encyclopædia Britannica. After eight weeks, he was suddenly informed that the job ended. After some investigation at Wilson's shop, Holmes contacts a police inspector and the manager of a nearby bank. With Watson, they hide in the bank vault and catch two thieves who had dug a tunnel from the shop while Wilson was at the decoy copying job.