Well, I've chosen.

I will live happy with her, or else, my dear Guerchard, I'll die with you.

Now let your men come--I'm ready for them." Guerchard ran to the door and shouted again.
"I think the fat's in the fire now," said Lupin, laughing.
He sprang to the table, opened the cardboard box, whipped off the top layer of cotton-wool, and took out a shining bomb.
He sprang to the wall, pressed the button, the bookshelf glided slowly to one side, the lift rose to the level of the floor and its doors flew open just as the detectives rushed in.
"Collar him!" yelled Guerchard.
"Stand back--hands up!" cried Lupin, in a terrible voice, raising his right hand high above his head.

"You know what this is ...

a bomb....
Come and collar me now, you swine! ...