“Say, that was nifty!” whispered Ned to Bob. “Wasn’t it?”

“What was?” asked Bob, somewhat absently.

“For cats’ sakes! Didn’t you see that fellow slide down the inclined wire rope?”

“Oh, you mean that?”

“Sure! What else would I mean? Did you see it?”

“No, I didn’t take particular notice,” replied Bob. “I was thinking of something else.”

“Well, for the love of stamps! Say, what did you come for, anyhow, if you aren’t enjoying it?” chuckled Harry.

“Oh, I’m enjoying it all right,” remarked Bob.

His chums shook their heads knowingly at each other. Well they realized that the detective virus was working in the veins of Bob Dexter.

It was two days after this, during which time Bob and his chums had paid a visit to Jolly Bill at the Mansion House, that something else happened. Jolly Bill had made himself at home in the town’s most pretentious hostelry, though that isn’t saying much. He was an easy person to make friends, and seemed to be well liked.