For several seconds the woman did not speak; she appeared completely incredulous. Then she moistened her pink lips.

"Burglary," she repeated rather than asked. "But that's impossible! I mean, nothing was stolen. When you say `last night,' do you mean…"

"I mean the night our departed friend Hogenauer called here and asked for bromide," H.M. answered rather testily. "For the sake o' clearness, let's call that last night"

"But that's impossible too-"

Again H.M. hoisted himself up. Charters and I followed, while Mrs. Antrim almost ran after him to the surgery. Evelyn remained where she was, her legs crossed, leaning back in the chair with her arm curled up over the back of it; a cigarette hanging from the corner of her mouth, one hazel eye cocked at the ceiling. I was standing in the door of the surgery, where I could see both Evelyn and Mrs. Antrim. The latter went briskly at the window. Then she turned round with a little-girl expression which belied her briskness.

"Well, now," said H.M., almost sleepily. "Did you notice that this morning, when you came in and found the bottles switched?"

"No. I was too-occupied with other things. But I still think it's impossible!"

"Wow!" said H.M. "Impossible. How?"

She pointed to the room. "You see, Larry and I sleep in the room just over this. I'm a very light sleeper. The catch on this window is broken; look at it. It must have made a crack like doomsday. I'm certain I must have heard it."

"And you didn't hear anything? Or any noise of someone movin' about?"