Clement roared with laughter.

“Well, of all the calm, foreseeing, clever little devils.... It’s a dazzling idea, Gatineau. Neuburg will be certain we’re at a loss in Montreal, will think he has plenty of time, while all the time we are overhauling him.”

“That’s it,” agreed the little detective. “The only thing that worries me is will the girl—Miss Reys—figure according to plan. I mean if she has any sense she’ll be suspicious at all this roundabout traveling, this chopping and changing of plans.”

“I hope she will be,” said Clement. “But I’m afraid she won’t. She doesn’t know the country; her companion does. She’s bound to follow blindly. And then anything can be put down to the erratic movements of Gunning.”

“She’ll find him too erratic, I’m thinking,” said Gatineau wisely.

“I’m hoping that, too,” said Clement.

Both had the sleep they needed, and a meal, and went to the railway station in good fettle. Under Gatineau’s instructions, Clement suddenly turned from the platform and entered the booking hall as though making for the street.

The man who had shadowed him from the hotel did not hesitate for a moment, but trailed after him. In the middle of the booking hall the hand of Xavier Gatineau came down on his shoulder, and he swung round to find the muzzle of an automatic within six inches of his solar plexus. He started to put up his hands.

“What’s the game?” he snarled.

“I want you, Nimmo Bates,” said Gatineau. “I want you in connection with the jewel robbery on the Empress of Prague. Cut out the rough stuff, Joe, and go quietly.”