“You don’t mean to tell me that it was you fellows who discovered them!” exclaimed the detective.
“Well, in a small way, yes.”
“That’s a rich one,” was Walters’ retort. “But go on with what you were saying.”
“What I was going to say,” continued Paul, “was that some maniac has been roaming through town and doing things, always leaving a white card to mark his visit there.”
“You don’t say!” remarked Walters. “And you’re trying to track him down?”
“That’s right.”
“How did you find out about this fellow with the white card?”
“Well, do you remember when Ken’s little sister, Betty, was reported missing for about an hour and then turned up again?”
“Why, yes, I remember the case. And I don’t think anything was done about it.”