But Charlie had not seen or heard from Rex in ten days, nor was news to be obtained of him from any other of his Marley friends. Roy went home seriously alarmed.

He hated to bring such a report to his mother, but he knew it would be better that she should be informed of all the facts.

She was somewhat stunned at first at the tidings, but quickly rallied.

“We must find him,” she said. “Something has happened to him. Did you think to ask Apgar if he remembered seeing Rex on his train Wednesday night?”

Apgar was the conductor on the 5:30 express.

“No, I’ll go down to the station and ask him this afternoon before he goes out.”

Roy returned with the announcement that Apgar was sure Rex had not been on his train.

“Then there is only one other theory.” Mrs. Pell looked very grave as she spoke.

“What is that, mother?”

She did not reply at once. Reginald was very dear to her. She hated to expose his failings even to his own brother. But it must be done.