"No. 1.--Height about five feet five, broad shouldered, short legs; back of neck dirty yellow, hair black and long, showing a tendency to curl. Clothes: a billy-cock hat, soiled stand-up collar, with a frayed yellow-and-black necktie showing above the back collar-stud, coat rusty black, circular patch of deep black material on left elbow; trousers grey, frayed at bottoms; boots pale yellow, badly in need of a clean, and much worn on the outside of each heel. "No. 2.--Height five feet ten, back of neck red, iron-grey hair closely cut, shoulders bent, legs long, feet planted well apart. Cloth cap; blue woollen scarf, blue serge coat and trousers, black boots that had apparently been treated with dubbin. Should take him to be a seafaring man; more than likely a bargeman. I feel pretty certain that I could pick out these men in a crowd of----" A stifled shout for aid was faintly borne to the Scout's ears. He stopped, turned, then without hesitation ran as hard as he could in the direction from which he had come. The mist hid the two men from his sight, while at the same time a light engine running slowly over the adjacent bridge threw out a dense cloud of steam that, beaten down by the moist atmosphere, made it impossible for Atherton to see more than a yard ahead. Once more came the cry, this time nearer, but gurgling, as if the victim's mouth was being held by one of his assailants. Imitating a man's voice, the Scout shouted. Just then the cloud of steam was wafted away, and Atherton was able to see what was taking place. The two men he had previously passed were struggling fiercely with a tall, elderly gentleman, who in spite of his grey hairs was strenuously resisting. Even as the Scout dashed up, the two rascals deliberately lifted their victim over the iron balustrade. There was a stifled shriek followed by a heavy plash, while the assailants bolted as fast as their legs could carry them. Three or four pedestrians, looming out of the mist, promptly stood aside to let the hurrying men pass. The former made no attempt to stop the fugitives. All they did was to stand still and gaze after them till they were lost to sight. "A man has been thrown into the river!" shouted Atherton. "Run down to the Charing Cross Pier and get them to send out a boat." Throwing off his coat and shoes the Scout climbed over a parapet and lowered himself till his whole weight was supported by his hands. There he hung for a brief instant. He realised that the drop was a long one, and in addition there was the possibility of falling not into the water but upon the deck of a barge that might at that moment be shooting under the bridge. In that case it might mean certain death, or at least broken limbs.