"It is time to be moving now," Geoffrey said at last. "I think the best way will be for me to get by the side of the dormer-window instead of above it. It would be very awkward leaning over there, and I should not have strength to strike a blow; whereas with the rope under my arms and my foot on the edge of the sill, which projects a few inches beyond the side of the window, I could stand upright and strike a downright blow on the cross-bow." "That would be the best way, I think," Roger Browne agreed; "and I will come down on to the top of the window and lean over. In the first place your foot might slip, and as you dangle there by the rope he might cut it and let you shoot over, or he might lean out and shoot you as you climb up the roof again; but if I am above with my pistol in readiness there will be no fear of accidents." CHAPTER V. AN HEROIC DEFENCE. The plan Roger Browne suggested was carried out. Geoffrey was first lowered to his place by the side of the window, and bracing himself against its side with a foot on the sill he managed to stand upright, leaning against the rope that Job Tredgold held from above. Job had instructions when Geoffrey lifted his arm to ease the rope a few inches so as to enable the lad to lean forward. After two or three attempts Geoffrey got the rope to the exact length which would enable him to look round the corner and to strike a blow with his right hand, in which he held a stout club. Roger Browne then descended by the aid of the other rope, and fastening it round his body lay down astride of the roof of the window with his head and shoulders over the end, and his pistol held in readiness. It seemed an age to Geoffrey before he heard the sound of a footstep in the loft beside him. He grasped his cudgel firmly and leaned slightly forward. For ten minutes there was quiet within, and Geoffrey guessed that the traitor was writing the missive he was about to send to the enemy; then the footstep approached the window, and a moment later a cross-bow was thrust out. A glance at it sufficed to show that the bolt was enveloped in a piece of paper wound round it and secured with a string. Steadying himself as well as he could Geoffrey struck with all his force down upon the cross-bow. The weapon, loosely held, went clattering down the tiles. There was an exclamation of surprise and fury from within the window, and at the same moment Job Tredgold, seeing that Geoffrey's attempt had been successful, hauled away at the rope and began to drag him backward up the tiles.