In a thoughtful mood Dick rejoined Sam, and the pair this time hurried to the subway, to get a train uptown.

"I've found out who the second man was," said the oldest Rover boy. "It was Japson, of Pelter, Japson & Company. Sam, I begin to think this is some deep game. This fellow Japson aided Crabtree to escape from the Plankville jail and in return Crabtree is aiding these brokers in their efforts to get the best of father!"

"If we can prove that, we ought to have the brokers arrested."

"But we can't prove it, absolutely. But I am convinced that I am right. The office boy told me that Japson telephoned to Pelter that he could not come in. More than likely Japson was afraid you would be on guard and spot him. As soon as Japson telephoned in Pelter went out—most likely to meet his partner."

"And maybe to hunt up Crabtree, Dick."

"Perhaps."

"But what of father?" went on the youngest Rover, anxiously.

"I can't answer that question, Sam. But it is going to be answered sooner or later—if I have to have all those men arrested. I am certain in my own mind that they are responsible for dad's disappearance. They got him out of the way so that they could get the best of him in that Sunset Irrigation Company scheme."

"I think we ought to watch the men and see where they go."

"So do I. But, now they know we are on guard, they will be very careful."