He glanced about him. The courtyard was deserted and the light was poor. Once off the ground, he was unlikely to be noticed even if some other tenant passed beneath him. In the full blaze of his unconscious foolishness the man buttoned his coat and began to climb.

Standing in the shadows of the passage communicating with the street, Simon Templar watched him go. And, as he watched, with a newborn smile of sheer poetic devilment hovering on his lips, the Saint loaded up his newest toy-a small but powerful air-pistol.

He had acquired it quite recently, out of pure mischief. It wasn't by any means a lethal weapon, and was never intended for the purpose, but its pellets were capable of making a very painful impression upon the recipient. It had occurred to Simon that, adroitly employed from his window, it might serve as a powerful discouragement to the miscellaneous collection of professional and amateur sleuths whom from time to time he found unduly interested in his movements. But this occasion he had not anticipated, and his pleasure was there fore all the keener.

As the man on the wall reached the level of the second floor and paused for breath, Simon took careful aim.

The bullet smacked into the man's hand with a force that momentarily numbed his fingers. With a sharp gasp of pain and fear, he became aware that his hold was broken, and he had not enough strength in his uninjured hand to support himself with that alone. He gasped again, scrabbling wildly at the stone-and then his foot slipped. . . .

The Saint pocketed his toy, and stepped quickly back into the street-so quickly that the man who was waiting just outside the passage had not time to appreciate his danger before it was upon him. He felt his coat lapels gripped by a sinewy hand, and looked into the Saint's face.