Dart made bold to glance this way and that, trying to guess what Tom had seen. For it had seemed, during those two hours, as if Tom had been scanning the sky for something. Over the western wall of the Tower, nothing was visible except for the columnar Monument, some half a mile distant, and beyond that, the dome of St. Paul’s. He turned his head to the right and looked north over the storehouses and barracks that lined that edge of the Inner Ward. Here was something: shreds of smoke were climbing up to vanish against the white sky. The source seemed near to hand. But not as near as the Mint, which lay just on the far side of those barracks. He guessed it was coming from Tower Hill. It was probably not from gunpowder, for Dart had not heard the Guard discharging any weapons. Possibly someone had lit a rubbish-fire in one of the courts tucked away in the maze of the Tower hamlets. Or possibly ’twas something more than a rubbish-blaze.