Read it through once

All the windows in the rear of the house had been long ago bricked up, except one small trap in the room where the boy was locked, and that was too small even for the passage of his body. But, from this aperture, he had never ceased to call on those without, to guard the back; and thus, when the murderer emerged at last on the house-top by the door in the roof, a loud shout proclaimed the fact to those in front, who immediately began to pour round, pressing upon each other in an unbroken stream.