only one we have, and it
may prove a most important one. I'll see that the Federal radio
authorities are notified at once. Keep in touch with me and let me know
if you come across anything else that seems to point to Cassey. His
escape is a sore point with me, and I'd be glad to have him once more
behind the bars. You can be sure he'll never get away again until he's
served out the last day of his sentence."

With a warm expression of thanks the warden hung up his telephone
receiver, and Bob hurried off to school to tell his comrades of what he
had learned.

There was no chance for this, however, before recess, as he had been
kept so long at the telephone that he was barely able to reach the
school before the bell rang.

When at last he told them of his talk with the warden, they listened
with spellbound interest.

"So the villain managed to escape, did he?" ruminated Joe. "That's a
black mark against the warden, and it's no wonder he's anxious to get
him back. I'd hate to be in Cassey's shoes if the prison gates ever
close on him again."

"You'd think it would be a comparatively easy matter to capture him,"
suggested Herb. "The fact that he stutters so badly makes him a marked
man."

"You can bet that he doesn't do any more talking than he can help,"
replied Joe. "And, for that matter, I suppose there are a good many
thousand stutterers in the United States. Almost every town has one or
more. Of course it's against him, but it doesn't by any means make it a
sure thing that he'll be nabbed."

Buck Looker and his cronies happened to pass them in the yard just at
that moment and caught the last word. Buck whispered something to Carl
Lutz, and the latter broke out into uproarious laughter.

It was so obviously directed against Joe that his impulsive temper took
fire at once. He stepped up to the trio, despite Bob's outstretched hand
that tried to restrain him.

"Were you fellows laughing at me?" he asked of the three, though his
eyes were fastened directly on Buck's.

"Not especially at you," returned Buck insolently. "But at something you
said."

"And what was that?" asked Joe, coming a step nearer, at which Buck
stepped back a trifle.

"About getting nabbed," he said. "It made me think of some fellows I
know that were nabbed last night for breaking windows."

"Oh, that was it!" remarked Joe, with dangerous calmness while his fist
clenched. "Now let me tell you what it reminds me of. It makes me think
o