“Don’t ask conundrums,” retorted Labar. “Either he’s pulled himself together or someone has moved him.”

Certain now that there was someone of the gang in the tunnel they advanced with weapons poised. The outer door was also shut but with a little manipulation that also was dealt with. The narrowing of the tunnel warned them that if they were approaching an ambush here was where it might be looked for. Only one man could advance at a time, and a determined opponent could hold any number at bay indefinitely. Labar crawled first followed by Moreland and the two Flying Squad men. Then came Malone. The prisoner was for the time left behind in charge of the two constables.