Taleverna

“I proceeded to think thus—_a posteriori_. The murderers _did_ escape from one of these windows. This being so, they could not have re-fastened the sashes from the inside, as they were found fastened—the consideration which put a stop, through its obviousness, to the scrutiny of the police in this quarter. Yet the sashes _were_ fastened. They must, then, have the power of fastening themselves. There was no escape from this conclusion. I stepped to the unobstructed casement, withdrew the nail with some difficulty, a…