river's deep! What kind of a fight is this, anyway?"

"I seen it! I seen it!" It was Jerry the Rat who now broke into the
gathering throng. "I seen it; a German sub."

"A submarine!" echoed a half dozen policemen at once.

"I think he is right," said Johnny. "You better drag the river."

"Hello!" exclaimed one of the officers. "If this ain't the same two guys
we've been looking for? Johnny Thompson and the Jap."

"You are right," said Johnny disgustedly, "but for once use a little
reason. There are world crooks down there in the river and they have
some helpless woman there as hostage. Perhaps by this time they may be
killing her. I'll keep. I can't get away; not for good. I'm known the
country over, beside your charge against me is false, idiotic."

"Yes, yes," it was Hanada's hoarse whisper. "Take me to a hospital. I'll
tell all and you will know he was not in it at all. Let him help you.
And--and, for God's sake, get that man."

He sank back unconscious.

"Here, Mulligan," ordered a sergeant, "you and Murphy take this Jap to
the Emergency quick. You, Kelly and Flannigan, get over to the box and
call the police boats with drags. Tell 'em to drag the river from
Madison street in one direction and from the lake in the other. It
sounds like a dream, but this thing has got to be cleared up. Them shots
come from the river sure's my name's Harrigan. We got to find how it's