Someone unexpectedly reaches out to Élise through Madeleine. Joseph begins to dissect the mystery behind Rebecca's death.

The Brotherhood convinces Joseph to help them infiltrate the prison. Ophélie coerces Father Maxence into divulging details on the man in Élise's locket.

With his newfound abilities as a blue-blood, Donatien tracks down Guy de Montargis, who makes a searing confession. Albert faces a tragic dilemma.

As the origin of the blue blood comes to light, Élise must form an alliance between nobles and rebels to avert its spread.

Joseph and Katell fall prey to Donatien's sinister scheme. Charles orders Pérouse to track down Élise and Lariboise.

As Joseph continues his search for a cure, tensions come to a head between Charles and Donatien, and Madeleine defies Donatien's attempt to destroy her.

Ophélie glimpses into Madeleine's alarming power, Oka and Albert part ways, and Élise faces betrayal.