Semnul celor patru
In "The Sign of the Four", she worries about Holmes's health after hearing him spend the night pacing up and down. In "The Adventure of the Naval Treaty", she apparently plays along with Holmes's dramatic reveal of the missing treaty to Mr. Phelps by serving Mr. Phelps a covered dish with the recovered treaty inside. Mrs. Hudson is displeased on the two occasions Holmes is visited by a dirty group of Baker Street Irregulars, expressing "disgust" when the Irregulars arrive in "A Study in Scarlet" and "dismay" when they appear in "The Sign of the Four". In "The Adventure of the Speckled Band", Mrs. Hudson is woken up early by the appearance of a client for Holmes and, by the time Watson is up, has "had the good sense to light the fire" according to Holmes.