Jealous of the thought of Irma being with other men, Nestor comes up with a plan to stop Irma's prostitution. But he soon finds out that it is not all that it is cracked up to be. Using a disguise, he invents an alter-ego, "Lord X", a British lord, who "becomes" Irma's sole client. Nestor's plans to keep Irma off the streets soon backfire, and she becomes suspicious, since Nestor must work long and hard in the market at night to earn the cash "Lord X" pays Irma. When Irma decides to leave Paris with the fictitious Lord X, Nestor decides to end the charade. Unaware he is being tailed by Hippolyte, he finds a secluded stretch along the river Seine, and tosses his disguise into it. Hippolyte, not having seen Nestor change his clothes, sees "Lord X"'s clothes floating in the water, and concludes Nestor murdered him. Before Nestor is arrested, Moustache advises him not to reveal that Lord X was a fabrication. He tells him, "The jails are full of innocent people because they told the truth." Nestor admits to having killed Lord X, but only because of his love for Irma.