Read the excerpt from the strange case of dr. jekyll and mr. hyde. this hall, in which he was now left alone, was a pet fancy of his friend the doctor’s; and utterson himself was wont to speak of it as the pleasantest room in london. but tonight there was a shudder in his blood; the face of hyde sat heavy on his memory; he felt (what was rare with him) a nausea and distaste of life; and in the gloom of his spirits, he seemed to read a menace in the flickering of the firelight on the polished cabinets and the uneasy starting of the shadow on the roof. he was ashamed of his relief, when poole presently returned to announce that dr. jekyll was gone out. which statement best describes how the author establishes mood in the excerpt?