"Yes, in a talk that followed. The man with him called him Jim."

"Jim Tapp," murmured Andy.

"He called the man Murdock."

"I thought so," Andy said to himself. "They put up that mail robbery."

"They cut open the bag and took out a lot of letters," continued Luke. "A few of them had money in them. This they pocketed, tearing up the letters and throwing them into the creek. There was one letter the boy kept. He read it over and over. When they had got through with the letters, he said to the man that it was funny."

"What was funny?" asked Andy.

"Why, he said there was a letter putting him on to 'a big spec.,' as he called it. He said the letter told about a secret, about a fortune the writer had discovered. He said the letter was to a boy who would never know his good luck if they didn't tell him. He said to the man there was something to think over. He chuckled as he bragged how they would make a big stake juggling the fortune of the heir, Andy Wildwood."

"I don't understand it at all," said Andy, "but it is a singular story, for a fact."

"Well, that's all I know about it. The minute I heard your name, of course I recalled where I had heard it before."

"Of course," nodded Andy thoughtfully.