Contains spoilers for this episode and earlier episodes.
In 1987, Claudia knows this is the day Egon dies and stays close to him, hoping to change it. He tells her that he now believes time travel explains the strange cases he investigated. When he wants the police to search the caves, Claudia blocks his call. Their struggle sends him into a fall that wounds his head. She begins calling for help, then stops, thinking of the sacrifices her older self said Regina's survival would require.
Egon recognizes his daughter as the White Devil before dying. Claudia returns home devastated, where a changed Jonas arrives with a message from her older self and offers to guide her. In 1954, Hannah uses adult Jonas's stolen machine to visit Ulrich, giving Egon Katharina's name to gain access. Ulrich begs her to help him escape. Hannah asks about his love for her, then tells Egon she was mistaken about the prisoner and leaves Ulrich behind.
In 2020, Martha recognizes adult Jonas, but Katharina interrupts their reunion and reveals that Mikkel became his father, making Martha his aunt. Magnus brings Bartosz's machine home, offering Katharina another possible route to her missing family. Clausen arrests Aleksander over his stolen identity and explains why he came to Winden: his own brother, Aleksander Köhler, disappeared in 1986. An anonymous letter directed him here, and the man now using that name is certainly not his brother.