"What I don't see is how they are going to get them across the frontier. It looks—it looks as if the Italian police were in it," said Sir Tancred, frowning.

"Do you mean to tell me that the Italian police would connive at kidnapping?" said the millionaire.

"No: but some rascal of a detective, who could pull a good many strings, might be in it. At any rate if they get them across the frontier undrugged, the authorities are squared or humbugged. What I'm afraid of is that they're making for that rabbit-warren, Genoa. If they get them there, we may be a fortnight finding them."

"I guess I'll squeal before that," said the millionaire; "yes, if I have to put up a million dollars."

The car had reached a speed at which they could only talk in a shout, and it seemed no more than a few minutes before Tinker slowed down for Mentone, and stopped at a gendarme. Before saying a word Sir Tancred showed him a twenty-franc piece; and the gendarme spoke, he was even voluble. Yes, he had seen a carriage, rather more than an hour before. It had galloped through the town. It carried fever-patients for the hospital at Genoa, ill of the bubonic plague. The police and the custom-house officials had been warned by wire from Monte Carlo and Genoa not to delay it. There were relays of horses every twenty miles to Genoa: the wires had said so.

"That was how they crossed the frontier, was it? What fools these officials are!" said Sir Tancred, and he gave the gendarme his Napoleon: and bade him tell his superior officer that the police had been humbugged.

"If they're really bound for Genoa, we can catch them and to spare—bar accidents," said Tinker cheerfully. "Besides, M. Lautrec will have wired to look out for them." And he set the car going.

"Oh, they're bound for Genoa, sure enough," said Sir Tancred. "But they won't enter it in that carriage, or much before daybreak. Still the rascals don't know that you've come, Mr. Rainer, and that we're already on their track. That ought to spoil their game."

The car ran through Mentone, and into Ventimiglia, but as it drew near the custom-house, Sir Tancred cried, "By Jove, we're going to be delayed! The guard's turned out!" And sure enough, a dozen soldiers barred the road.

Tinker stopped the car: and a sergeant bade Sir Tancred and Mr. Rainer come with him to the officer in command. Tinker gave his father the pocketbook which contained their passports; the two of them got out of the car, and followed the sergeant into the custom-house.