A Coincidence of Dates
Holmes explains how Helen's account had already led him to expect a ventilator before he saw the room. The clue lay in the sequence of events she described. He then points out a curious correspondence between the dates of several changes at the house and asks Watson to think through its significance.
Holmes explains how Helen's account had already led him to expect a ventilator before he saw the room. The clue lay in the sequence of events she described. He then points out a curious correspondence between the dates of several changes at the house and asks Watson to think through its significance.