"Poor old chap!" said the boys sympathetically.
"He evidently had some money on his person when he disappeared, because he hasn't been in want, and the reason it was so hard to follow him was because he didn't stay in any one town more than a day or so. Just long enough to know that it wasn't his own town and that he could learn nothing about himself there. Then he would go on to the next place. But he'll turn up, I'm sure. I have a number of places being watched, where he's likely to put in an appearance some time, and I'll be notified at once."
"In the meantime," promised Frank, "we'll keep our eyes peeled for him. But we'll not be able to help much for a couple of weeks yet."
"Why?"
"We're going on a motorbike jaunt down the coast to look over some caves."
"Hidden treasure?" asked their father, his eyes twinkling.
"Perhaps."
"I hope you make a million," laughed Mr. Hardy. "I'll try to find Todham Todd before you come back."
CHAPTER VI
The Missing Motorcycle