He walked across to the fireplace carelessly and stood with his back to it; then, lifting his foot, he kicked back one of the steel fire-dogs which stood on either side of the wide hearth, and the “dog” fell over on its side. It was a nervous act of a man who was greatly worried and was not quite conscious of what he was doing. Even Elk, who was all suspicion, saw nothing to excite his apprehension. “You think my name is Balder, do you?” the man went on. “Well, all I can say is——” Suddenly he flung himself sideways on to the hearthrug, but Elk was quicker. As an oblong slip of the floor gave way beneath the man’s weight, Elk gripped him by the collar and together they dragged him back to the room. In a second the three were struggling on the floor together, and in his desperation Balder’s strength was unbelievable. His roaring cry for help was heard. There came a heavy blow on the door, the babble of angry voices without, and then, from the ground outside, a series of sharp explosions, as the army of detectives raced across the lawn, oblivious to the presence of the alarm-guns. The fight was short and sharp. The six blind men who comprised the household of No. 7 were hustled away, and in the last car travelled Acting-Sergeant Balder, that redoubtable No. 7, who was the right hand and the left hand of the terrible Frog. CHAPTER XXVII MR. BROAD IS INTERESTING DICK GORDON ended his interview with Mr. Ezra Maitland at three o’clock in the morning, and went to Headquarters, to find the charge-room at Cannon Row singularly empty. When he had left, it was impossible to get in or out for the crowd of detectives which filled or surrounded the place. “On the whole, Pentonville is safest, and I’ve got him there. I asked the Governor to put him in the condemned cell, but it is not etiquette. Anyway, Pentonville is the safest spot I know, and I think that, unless Frogs eat stones, he’ll stay. What has Maitland got to say, Captain?” “Maitland’s story, so far as one can get a story from him, is that he went to see Balder by invitation. ‘When you’re sent for by the police, what can you do?’ he asked, and the question is unanswerable.” “There is no doubt at all,” said Elk, “that Maitland knew Balder’s character, and it was not in his capacity as policeman that the old man visited him. There is less doubt that this man is hand in glove with the Frog, but it is going to be very difficult to prove.” “Maitland puzzles me,” said Dick. “He’s such a bully, and yet such a frightened old man. I thought he was going to drop through the floor when I told him who I was, and why I had come. And when I mentioned the fact that Balder had been arrested, he almost collapsed.” “That line has to be followed,” said Elk thoughtfully. “I have sent for Johnson. He ought to be here by now. Johnson must know something about the old man’s business, and he will be a very valuable witness if we can connect the two.”