Freeing her knees from any constraint of her dress, Marion took her position just inside the casement a little to the right. With deliberation that seemed unending to Simone she fitted the arrow, drew the bowstring taut, once, twice, thrice. Then she gathered herself and rested motionless. A second later there was a flashing gleam in the grey air. Then a sharp tap. Aghast, Marion peered forward. The arrow had fallen wide, striking the masonry of the wall.
Simone gave a low cry of dismay, and stared at her mistress. Deathly white, Marion laid down the bow, and drew gently on the silken strand. Somehow the arrow must be retrieved.
There was a faint scraping noise as the shaft was drawn backward up the face of the wall. Twice it stuck in the masonry. Marion had a sickening fear that the silk would not carry the light burden she eased the length a little, then, with a swift lunge, played the silk outward, and jerked the arrow up above the wall. Rapidly she drew in the silk, hand over hand. On the wall of her aunt's garden the arrow stuck again. Less carefully Marion drew at it. The arrow caught on its point, and dropped sharply down inside the garden. At the next tug the silk broke.
'No matter,' said Marion. ''Tis safe. Another.'
Carefully the two coiled up the silk again. Marion dared not hurry. Should the length not run easily, the direction of the arrow would be warped.
Just as she knotted the line to the second arrow, there was a sound of scraping feet in the gaol yard. The girls looked at each other in the dim light.
Peering through the casement, Marion saw a dark figure detach itself from the buildings on the north side. With his arms wide, the sentry wearily stretched his body. He gave himself a little shake, and yawned. The watchers could plainly hear his loud 'Ha-ho!' Then he took up his carbine. A few notes of a tavern song came to their ears. The sentry was waking up. He shouldered his gun, and marched up and down the yard. A minute later he appeared on the south side, tramped the narrow space between the gaol and the wall, retraced his steps. As he turned, Marion was already fitting the arrow to the bow. His shuffling feet echoed in the silence of the enclosure. There would be about thirty seconds before he would turn again.
With hands clasped, shaking from head to foot, Simone watched the second arrow speed. Was it home? Yes. No. Again came the sickening tap. The shaft had struck the middle of the central bar in the grating, half an inch wide of the mark.
Once more Marion hauled in the silk. A deadly chill gripped her heart. The sentry's feet sounded nearer. A little puff of breeze came again. The silk shook as the arrow was drawn up the wall. Would it stick in a crevice this time? For a few seconds, during which Marion seemed not to breathe, and the room spun round her, the arrow caught on the stones. Round the corner came the sound of the sentry's feet. Marion leaned far out, and with a swift sideways motion played out the silk and drew the arrow over the coping of the wall. Just as the sentry appeared in view the shaft fell into the road that bordered the gaol.
'Never mind,' said Simone, through chattering teeth. 'I will go and get it later.'