The trio is invited by the mysterious and sinister Count Kalliovski to perform at the chateau of the Marquis de Villeduval for him and his guests.

After escaping back to Paris with Sido's help via a secret passage in her chamber, Têtu warns Yann he is in grave danger and insists he travel to London.

Têtu's friend, Monsieur Cordell, arranges for Yann to stay with Henry and Juliette Laxton in London, who happen to be Sido's maternal aunt and uncle.

After attempting to run away, he rescues a poor but eccentric actor named Mr Trippen from being robbed by throwing his voice to distract the thugs.

As Yann grows older he successfully adapts to English society but seems to have lost his gift to throw his voice and read minds.

At the same time, the body of an old acquaintance of the Marquis is found by the Thames, and Yann suspects Kalliovski after Cordell notices his necklace around the victim's neck.

Maître Tardieu, the Marquis' lawyer visits him one day warning him that he is bankrupt, and delivers a letter from Kalliovski demanding him to repay his debts, and asking for Sido's hand in marriage.

The chateau is soon destroyed by a mob, prompting Sido and her father to escape through a secret tunnel with the help of their servants and are given refuge by another of The Marquis' friend, the Duchesse de Lamantes.

Yann eventually returns to Paris and his old home, now renamed the Théâtre de la Liberté, and reunites with Têtu, Didier, the caretaker of the theatre, and Monsieur Aulard, the manager.

She explains her situation including her engagement to Kalliovski, and that the Duchesse had advised her and her father to find Mr. Tull who would smuggle them out of the country.

He gives them a bag of jewels that belonged to Sido's mother, Isabelle Gautier, and Armand de Villeduval, the Marquis' half brother.

Meanwhile, Yann and Maître Tardieu meet with her in prison however, the ever gentle and good-hearted Sido cannot bring herself to abandon her insane and helpless father.

They invite Kalliovski to a performance with a pierrot to distract him while Yann and Didier attempt to break into his apartmento find the love letters from Sido's parents.

He discovers a room full of automatons made from Kalliovski's murdered victims known as 'The Sisters Macabre' which he uses to hide all his secrets.