McMurdo is the doorman at Pondicherry Lodge, the Sholto family home. When Sherlock Holmes, Dr. Watson, Miss Morstan and Thaddeus Sholto arrive, he is unwilling to let anyone but Thaddeus into the house (under orders from Bartholomew Sholto). However, his attitude soon softens when Holmes realizes that the two have met before in an amateur boxing match.
McMurdo Character Timeline in The Sign of the Four
The timeline below shows where the character McMurdo appears in The Sign of the Four. The colored dots and icons indicate which themes are associated with that appearance.
Chapter 5 — The Tragedy of Pondicherry Lodge
...wall topped with broken glass, with only a heavy iron door for entry. The doorman, McMurdo, is reluctant to let in anyone but Thaddeus. Holmes realizes that he knows McMurdo, whom... (full context)