“Go on,” urged Merriwell.

“Last night,” said Arlington, “I learned something about Hammerswell that made me decide right away that he ought to be sent to the jug. Bad as I knew him to be before that, I never fancied he had committed murder.”

“Murder!” breathed Dick, lifting his eyebrows.

“Just that,” nodded Chet, “and nothing else. I was lying on the grass in front of the hotel last night, smoking a cigarette and thinking. Pretty soon a man came sneaking up, dodging from one clump of shrubbery to another. His movements interested me, and I watched him. He didn’t observe me, and I took care he should not. I followed him, and saw him hide behind the shrubbery until Benton Hammerswell, smoking a cigar, approached the spot. Then the man I had followed stepped out and spoke to Hammerswell. It was Luke Grimes, the assistant engineer of the Lady May, a chap I fancy you have good cause to remember, Merriwell.”

“I should say so!” nodded Dick, “but I thought detectives had chased Grimes as far as the Canadian border and then lost track of him.”

“So they did, I presume. He has been up to Montreal, but is back again. Hammerswell promised to send him money, which he would receive in Montreal. The money was not sent, and Grimes came back to demand it. I was within ten feet of them last night as they sat on the rustic seat and talked the thing over. What I heard made my blood run cold. Grimes has a hold on Hammerswell, and he attempted to put on the screws. You know Hop Sullivan was paid by Hammerswell to hold up the trolley car between Rockford and Maplewood one day and run off your new pitcher, Owen Bold. Sullivan was captured, but escaped. It seems that he demanded money from Hammerswell, and they met by appointment one night on High Bluff, near Rapid River. Hammerswell pushed Sullivan into the river, and Sullivan was drowned. Grimes saw the act, and, therefore, he has Hammerswell in the hollow of his hand. I found all this out last night as I listened.”

“Are you speaking the truth, Arlington?” demanded Dick.

“Why should I lie to you?” asked Chester. “It would do me no good. Of course, I am speaking the truth. Grimes received no money from Hammerswell because Hammerswell had none to give. But Grimes swore he would be on this island to-night when the ball games were finished, ready to collect from Hammerswell. I decided to let you know about this. You think I’m a pretty cheap dog, Merriwell; but you can see I’m giving you an opportunity to crush this man Hammerswell, who has tried so many times to crush you. If you can succeed in having Grimes captured, you will be able to compel Hammerswell to face a murder charge. And he will be convicted, too.”

In spite of the fact that Chester Arlington was speaking the truth, his manner seemed uncertain, and Merriwell could not help doubting him. Through it all Dick was wondering what new trick it was that his enemies were seeking to play on him.

Chester saw the expression of doubt on Merriwell’s face, and in exasperation he cried: