The Frenchman clenched his teeth determinedly, but did not speak, and the crowd gathered more closely around the trio.

‘Stand back!’ shouted Mr Slimm—‘stand back, or some of ye will suffer. Will you open that door?’

The only answer was a rush by some one in the crowd, a movement which that some one bitterly repented, for the iron-clamped toe of the American’s boot struck him prone to the floor, sick and faint with the pain. At this moment the peculiar whistle was heard, and the room was instantly in darkness. Before the crowd could collect themselves for a rush, Mr Slimm passed his hand beneath his long coat-tails and produced a flat lantern, which was fastened round his waist like a policeman’s, and which gave sufficient light to guard against any attack; certainly enough light to show the hungry swindlers the cold gleam of a revolver barrel covering the assembly. The American passed a second weapon to Edgar, and stood calmly waiting for the next move.

‘Now,’ he said, sullenly and distinctly, ‘I think we are quits. We air going to leave this pleasant company right away, but first we propose to do justice. Where is the artist who plays cards with two kings of one suit? He’d better come forward, because this weapon has a bad way of going off. He need not fancy I can’t see him, because I can. He is skulking behind the brigand with the earrings.’

The detected swindler came forward sullenly.

‘Young man,’ said Mr Slimm, turning towards the boy who had been losing so heavily, ‘how much have you lost?’

The youngster thought a moment, and said about twenty pounds.

‘Twenty pounds. Very good.—Now, my friend, I’m going to trouble you for the loan of twenty pounds. I don’t expect to be in a position to pay you back just at present; but until I do, you can console yourself by remembering that virtue is its own reward. Come, no sulking; shell out that money, or’——

With great reluctance, the sharper produced the money and handed it over to the youth. The American watched the transaction with grave satisfaction, and then turned to the landlord. ‘Mr Frenchman, we wish you a very good-night. We have not been very profitable customers, nor have we trespassed upon your hospitality. If you want payment badly, you can get it out of the thief who won my half-crowns.—Good-night, gentlemen; we may meet again. If we do, and I am on the jury, I’ll give you the benefit of the doubt.’

A moment later, they were in the street, and walking away at a brisk pace, the ungrateful youth disappearing with all speed.