"Shall I write Arsène?" said Charolais, in a horrified tone.
"Why not?" said Lupin. "It's your charming name, isn't it?"
Bonavent pricked up his ears, and looked at Charolais with a new interest.
Charolais shrugged his shoulders, finished the letter, blotted it, put it in an envelope, addressed it, and handed it to Lupin.
"Take this to Mademoiselle Gournay-Martin," said Lupin, handing it to Bonavent.
Bonavent took the letter, turned, and had taken one step towards the door when Lupin sprang. His arm went round the detective's neck; he jerked him backwards off his feet, scragging him.
"Stir, and I'll break your neck!" he cried in a terrible voice; and then he said quietly to Charolais, "Just take my pocket-book out of this fellow's tunic."
Charolais, with deft fingers, ripped open the detective's tunic, and took out the pocket-book.
"This is what they call Jiu-jitsu, old chap! You'll be able to teach it to your colleagues,"
