1. Return (or warp) to the Mansion's Grand Library. 2. Locate the door at F-4. Click on it to be teleported instantly to the center of a battle-room. 3. Survive inside this room for five minutes to win. Hitting the boxes/casks are optional but not necessary. 4. You will reappear in the Labratory. Ahead, at the end of the hall, talk to Dr. Torsche. 5. Choose the option "Does this ribbon look familiar to you". Next Quest: "Catherine's Spine"