A dangerous gleam came into Sidney Prale's eyes. "That simplifies matters," he said. "I'll watch for Kate Gilbert, and when I see her I'll ask why she sent me those notes. Then I'll get George Lerton alone and choke out of him why he lied about meeting me on the Avenue. I've trimmed worse men than George Lerton." "You'll be a good little boy and do nothing of the sort," Farland told him. "We are playing a double game, remember--trying to solve this enemy business, and at the same time trying to clear you of a murder charge. If any of those persons get the idea that we are unduly interested in them, we may not have such an easy time of it." "I understand that, of course." "Let me tell you a few more things, Sid. I saw Lerton talking to Miss Gilbert on the street. They were speaking in very low tones. When they parted, I followed Lerton to his office, and went in and talked to him. I did it just to size him up. He still declares that he never met you on Fifth Avenue. He acts like a man afraid of something; and I discovered an interesting thing, Sid. He has a typewriter in his private office, one for his personal use. I managed to type a short note on it." "What of that?" "That typewriter has a few bad keys, Sid. And I discovered this--that the notes sent to the barber and merchant, that caused them to lie and try to smash your alibi, were written on the typewriter in George Lerton's office!" Prale sprang to his feet. "Then Lerton has something to do with this!" he cried. "He tried to get me to leave town, and he tried to break down my alibi. How did he know I was going to make an alibi like that?" "My guess is that your cousin has been having you watched since you got off the ship." "But, why?" Prale cried. "It is true that he married the girl who had jilted me a few years before, but I do not hold that against him. I know of no reason why he should work against me so." "Know anything about him that might cause him serious trouble if you talked?" "No," Prale replied. "As much as I dislike him, as much as I suspect that he is crooked in business, all that I really could say would be that he had a mean disposition and was not to be trusted too far." "I thought maybe you had something on him, and he was trying to get you out of the way so you'd not talk," Farland said. "That would explain a lot, of course." "It can't be that." "Then we are up in the air again." "Why not ask him?" Prale demanded. "Believe me, I'll wait for him to come from his office--and he'll answer me, and tell the truth!" "Put that hot head of yours under the nearest cold-water faucet!" Farland commanded. "You make a move that I don't sanction, and I'll quit the case! You'll spoil things, Sid, if you're not careful. Just digest what I have told you." "You're in command, Jim!"