Riley looked very grave, as he always did when any one asked him questions pertaining to police matters.
"Well," he said, "there is and there isn't."
"That mean's there isn't."
"We ain't found 'em yet. But that don't mean they won't be found," said the officer darkly. "We're followin' up clues."
"What kind of clues?"
"Oh, just clues," said the officer vaguely. "We'll have 'em behind the bars before long. But you'd better keep an eye on that car of yours. It's just the kind somebody would steal."
"Trust us. There's been no trace of the other cars, then?"
Riley shook his head.
"Not a sign. But them thieves will go too far some of these fine days, and then we'll catch 'em."
"Well, we hope you're the man who lands them," said Frank cheerfully, as he edged the car out from the curb again. "So long."
The boys drove away, and Con Riley patiently resumed his beat.
"The game is still open," remarked Joe. "If the police had learned anything new, Riley would have heard about it."
"Whenever he says they're following up clues, you can be certain that they're up
