"See anything?" whispered Bart, who was nearest him.

"I thought I caught a glimpse of a fellow stealing into that alley
half-way down the block," returned Frank. "And there goes another
one," he added, with a trace of excitement in his voice.

"I was looking that way and I didn't see anything," murmured Billy
Waldon rather incredulously.

"I'd bank on Frank," returned Bart. "He has the best eyes of any
of us. They're regular telescopes."

"There goes another!" exclaimed Frank tensely. "There's something
doing there, sure as guns!"

"I know that alley," said Tom Bradford. "I've often looked into it
when I passed it on my beat. But it's a blind alley and doesn't
lead to any thing. It ends at a brick wall."

"All the better chance to bag them," replied Frank. "We'll wait
just a minute longer to see If any one else goes in, and then
we'll go down and nip the whole bunch. It's against regulations
for them to be on the streets at this hour, and you can bet
they're up to no good."

"I only hope the fellow's among them that fired that shot,"
murmured Tom vengefully.

They waited a moment or two longer, but Frank Sheldon's eyes