"On Tuesday night I got on the roof of one of the tall government buildings near here, and examining each roof as I crossed it looking for wireless antennae, I finally reached this house. I suspected I was being watched by Baron von Fincke, but managed to confuse him as to the direction I was taking, and finally clambered down into this attic through the scuttle. I was certain he was not aware of my identity, and for the sake of my plans, could not risk discovery. "I had never been in your attic before," went on Miller, addressing Kathleen directly. "I was not even positive this was your house. When trying to find my way about I chanced upon the elevator shaft; I thought I was walking into a closet. At that moment I heard a footstep on the stair." Julie started and bent eagerly forward. "Desiring to get away as quickly as possible, I pressed the button for the elevator...." "But the elevator must have been right there," interrupted Kathleen. "You could not have opened the outer mahogany door otherwise." "So I realized when I had collected my wits," responded Miller. "Opening both doors, I bolted into the elevator a few minutes before the footsteps reached the attic." "Was Spencer in the elevator then?" questioned Foster. "I don't know; the elevator was dark, and I only used my flashlight for a second to show me the proper button to push for the first floor. It may be that Spencer was in the elevator, but I did not see him." "But I did," volunteered Julie, coming forward. "And I it was you heard creeping upstairs. I believed that Henry was a spy and feared that he would steal Mr. Whitney's invention. Oh, monsieur, I was so intent on guarding the studio I never gave a thought to the sub-cellar. Frequently I watched all night in a niche I had fashioned near the wine closet, but on Tuesday, alas! I slept. The soft closing of the elevator door awoke me, and a person whom, by her walk and height, I judged to be mademoiselle, moved away from the elevator and went downstairs. Inspired by curiosity I entered the elevator a moment later, and switched on the light. I was almost overcome by the sight of M. Spencer, and turned out the light to shut away the view. I rushed to my room; but I could not rest. I was in agony for you, mademoiselle; that very afternoon I had warned you against Monsieur Spencer, and I feared--Oh, forgive me! that you had killed him because he had injured your father. After a long interval I crept upstairs to the attic and there tried to puzzle out what would be best to do for mademoiselle. Fearing the police would make me tell what I had seen, I ran away." "When did you discover Sinclair Spencer in the elevator, Kathleen?" asked Miss Kiametia.