"Of course, there wasn't a taxi in sight," said Gary, ruefully, "and before I could convince the nearest chauffeur that my badge wasn't phony they'd gone!"

"That's the first time in months," Gary replied. "He knows that he's followed, all right, and he's cagy enough to keep in the open and pretend to be aboveboard."

"Right," commented the Department of Justice operative, "and this move would appear to indicate that something was doing. Better phone all your stations to watch out for him, Cap."

But nothing more was seen or heard of Herr Weimar for five days.

Meanwhile events moved rapidly for Maxwell.

On September 26th, the day after the Austrian disappeared, one of the policemen whose beat lay along Fourteenth Street, near Third Avenue, asked to see the government detective.

"My name's Riley," announced the copper, with a brogue as broad as the toes of his shoes. "Does this Austrian, this here Buch feller ye're lookin' for, like music? Is he nuts about it?"

"Music?" echoed Maxwell. "I'm sure I don't know.... But wait a minute! Yes, that's what that chap who used to know him on the boat told me. Saying he was forever playing a fiddle when he was off duty and that Weimar threw it overboard one day in a fit of rage. Why? What's the connection?"

"Nothin' in particular, save that a little girl I'm rather sweet on wurruks in a music store on Fourteenth Street an' she an' I was talkin' things over last night an' I happened to mintion th' reward offered for this Buch feller. 'Why!' says she, 'that sounds just like the Dutchy that used to come into th' shop a whole lot a year or so ago. He was crazy about music an' kep' himself pretty nigh broke a-buyin' those expensive new records. Got me to save him every violin one that came out.'"

"Um, yes," muttered Maxwell, "but has the young lady seen anything of this chap lately?"