Forrester took out the muffler and wound it about his neck and face until only his eyes were exposed. Then he pulled his cap down so that its vizor shadowed even these. With intermittent and cautious flashes of his pocket lamp he found that the room was unoccupied and the door leading to what he believed to be Lucy’s bedroom closed. This he approached with wary tread and opened the door slowly and softly. A flash of his light showed that the bedroom was also deserted. Lucy was not at home! It was a wonderful opportunity that might be interrupted at any moment, so Forrester worked fast. He considered it immaterial what the woman might discover after he was gone. Any disorder she would probably attribute to another visit by the police. Forrester tore the coverings from the bed and scattered the contents of drawers on the floor. His search was unrewarded. There was not a line of writing anywhere; no concealed arms, Bolshevik literature or suspicious bottles; absolutely nothing to form the slightest clue. He then carried his search into the sitting room with equally unsuccessful results. Forrester received an uncomfortable shock as he turned his pocket lamp into the aquarium and saw the slimy bodies of the snakes writhe uneasily under the glare of the light. Thus far the search had been fruitless and discouraging, but the sight of the snakes in their glass prison started Forrester’s mind to working. What was the real purpose of these snakes? Their uncanny, loathsome bodies were repellent to the strongest man. _Repellent!_ The word was illuminative. Was not one of its definitions "drive back"? Was this the actual purpose of the snakes? Forrester fixed the button on his pocket lamp to keep the light steady, and laid it on the center table to illumine his work. Lifting the stand on which the aquarium rested he placed it near the middle of the room and pulled aside the heavy rug. _Directly beneath the spot where the aquarium stood was a square trapdoor in the floor!_ Forrester stooped, placed two fingers in a hole, evidently provided for the purpose, lifted the section of carefully fitted flooring and set it to one side. Taking his light from the table and turning its rays into the opening Forrester saw a ladder leading into a cellar beneath the cottage. Swiftly he dropped his legs through the hole and descended.