Episode Title:
Sin.
Episode Description:
Historia assures Eren that her father has good intentions even though he created problems for the Scouts and killed Pastor Nick. Rod then instructs Historia to touch Eren, triggering subconscious memories which leave Eren traumatized from learning that he was turned into a Titan by his father Grisha and ate his father on the night he received the basement key. The process also unintentionally triggers Historia's memories of a young woman named Frieda, whom Rod reveals to be Historia's half-sister, who erased herself from Historia's memories. Rod explains that Frieda possessed the Founding Titan power inherited in their family, before Grisha, who was also a Titan Shifter, devoured her for it while slaughtering her four siblings and mother. Later, Kenny arrives and updates them on the coup before preparing to defend the crystalline cavern beneath the Reiss chapel with his men. Meanwhile in the capital, Pyxis reveals to Erwin that the Reiss family possess the power to alter people's memories, and Erwin leads a force out to rescue Eren. As Kenny Ackerman prepares his defense, he recalls his grandfather saying that the Ackermans were once bodyguards to the Reiss royal family but were exiled as the Reiss memory altering powers had no effect on them. Meanwhile, Squad Levi finds a hidden trapdoor in the floor of the Reiss chapel, and they prepare to descend and rescue Eren.
