The four hide in the bank vault, waiting in the dark for over an hour until two men emerge from a tunnel cut into the vault's floor and are captured. They are John Clay, who has a long history of criminal activity already, and his helper Archie. Under the aliases of Spaulding and Ross, they had contrived the 'Red-Headed League' rigmarole to keep Wilson out of his shop while they dug a tunnel in the basement to reach the vault. Although paying Wilson £4 a week was expensive, it was a pittance compared to the shipment of gold coins they were planning to steal.