Irma, sentenced to life imprisonment, has been sent to St. Lazarus’ prison. A transfer order is sent to the prison to send Irma to a penal colony in Algeria. On the day of her departure, Irma finds out that Moréno has been executed. Satanas follows Irma’s transportation route, stopping at a seaside hotel in disguise as a priest. At the port, he gives some religious comfort to the prisoners, but Irma’s copy contains a secret message saying “the ship will blow up” and giving her directions on how to safeguard herself. Satanas destroys the ship with his cannon. Meanwhile, Philippe finds through the red codebook that the explosive shell that landed on the “Happy Shack” came from Montmartre, and Mazamette goes to investigate. His son, Eustache Mazamette (René Poyen), is sent home from school for bad behaviour, so they go to “investigate” together. They find some men loading boxes into a house, and notice one of the top hat cases contains a shell. Later, reading that no survivors have been found from the exploding ship, Satanas visits Philippe to avenge Irma’s death. Satanas paralyses Phillipe with the poisoned pin in his glove and leaves a bomb in a top hat to kill him off. Mazamette arrives and throws the top hat out the window just in time. At Satanas’ home, Eustache is used as a ploy to hide Mazamette in a box, but Satanas sees this through a spy-hole. Satanas threatens Eustache, but Eustache shoots at Satanas, and the police raid the building and arrest him. After the action, they find that Mazamette’s nose has been broken by Eustache’s shot. Meanwhile, Irma is shown to have survived the blast on the ship, and is on her way back to Paris as a stowaway under a train. She is helped by the station staff and police, pretending that she is in “one of those eternal love stories beloved by popular imagination.” She makes her way to the Vampire hangout, the “Howling Cat” nightclub, where she performs, and is rapturously greeted by the Vampires. Upon hearing of the arrest of Satanas, one of the Vampires, Venomous (Frederik Moriss), appoints himself the new chief. By Satanas’ orders, they mail him an envelope containing a poisoned note, which he eats to commit suicide.