"Get you?" whispered Johnny.

"No. You?"

"Nope."

Then a long finger of light came feeling its way along the murky waters to rest on the bridge.

With a sigh of relief, Johnny saw that it came from a police-boat down stream. The light felt its way back and forth, back and forth across the river, then up to the bridge and across that. It came to rest as it glared into their eyes. It blinked one, two, three times, then went out.

"I'm glad they didn't hold it on us," breathed Johnny. "In that light anybody that wanted to could get a bead on us."

Hearing heavy, hurrying footsteps approaching, they stood up well back against the iron braces.

"Police!" whispered Johnny.

"You fellows shoot?" demanded one of the policemen as they came up and halted before the two boys.

"Nope," Johnny answered.