"It's very strange," said Sergeant Folenfant, judiciously, "that we should be reduced to protecting that gentleman against himself."

"With Lupin, everything is upside down," sighed Ganimard.

A minute elapsed.

"Look out!" he said.

M. Gerbois was leaving the bank. When he came to the end of the Rue des Capucines, he turned down the boulevard, keeping to the left-hand side. He walked away slowly, along the shops, and looked into the windows.

"Our friend's too quiet," said Ganimard. "A fellow with a million in his pocket does not keep so quiet as all that."

"What can he do?"

"Oh, nothing, of course.... No matter, I mistrust him. It's Lupin, Lupin...."

At that moment M. Gerbois went to a kiosk, bought some newspapers, took his change, unfolded one of the sheets and, with outstretched arms, began to read, while walking on with short steps. And, suddenly, with a bound, he jumped into a motor-cab which was waiting beside the curb. The power must have been on, for the car drove off rapidly, turned the corner of the Madeleine and disappeared.

"By Jupiter!" cried Ganimard. "Another of his inventions!"