Just at that moment, a very young street urchin named Wiggins arrives. He is the leader of the Baker Street Irregulars, a group of street children Holmes employs to help him occasionally. Wiggins states that he's summoned the cab Holmes wanted. Holmes sends him down to fetch the cabby, claiming to need help with his luggage. When the cabby comes upstairs and bends for the trunk, Holmes handcuffs and restrains him. He then announces the captive cabby as Jefferson Hope, the murderer of Drebber and Stangerson.