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This article is about the Aleksander from Eva's World. For the Aleksander from Adam's World, see Aleksander Tiedemann. For the Aleksander from the Original World, see Aleksander Köhler.

Aleksander Tiedemann (previously Aleksander Köhler, originally Boris Niewald) is the director of the Winden Nuclear Power Plant. He was married to Regina Tiedemann until her death from cancer in 2019. Together they had a son, Bartosz.



November 4[]

Officer Charlotte Doppler comes to the plant and tries to get Aleksander to give her the schedules of his employees from the night of Erik Obendorf's disappearance. He asks if she has a court order, but Charlotte says she does not. Aleksander tells her he will have the schedules sent to her. Charlotte asks how he has been since his wife's passing, and Aleksander replies he is all right. On her way out Charlotte wonders if it was possible for Erik to have made his way onto the grounds. Aleksander responds that this is impossible because the access points were sealed years ago. He then glances over the photograph of his wife Regina, who passed away just two months before.

November 5[]

Hannah Nielsen visits Aleksander and says sorry about what happened to Regina. She asks Aleksander how he and Bartosz are doing and tells him she wants to offer him a deal, telling him she has something that was his and wanted to return it. She takes out an old plastic bag and asks him if he remembers it. It is the bag that once held his gun and the passport with Aleksander's true identity on it. Seeing Aleksander's worried face, Hannah tells him that the contents of the bag are safe. Aleksander asks if what she wants is money, but she refuses: She wants Charlotte "destroyed" and to lose everything.

November 7[]

Charlotte visits Aleksander in order to ask him some questions regarding Mads Nielsen in the bunker. When asked if he was okay, Aleksander mentions that everybody is stressed because of the plant's demolition. He looks at the bag Hannah gave him two days before. Charlotte asks him when he first got to Winden, and he tells her that it was fall of 1986 and that he also started working at the plant around that time. He asks her if the shift schedules he had sent got to her, and she nods. She also asks if previous shift schedules at the plant have been archived, to which Aleksander responds that they have and wonders what month. However, Charlotte is not in search of a month; she wants information regarding 1986.

November 8[]

With six hours left until the apocalypse, Aleksander asks where the containers are and tells Jürgen Obendorf over the phone to do as he says. Bartosz walks in and asks his father if everything is okay, and Aleksander tells him he would have to leave despite having promised he would stay. He tells Bartosz he is being blackmailed using a murder in Marburg which occurred thirty-three years ago, mentioning there were decisions in life that could never be undone. He confesses his name is not Aleksander, but Boris Niewald, and begs Bartosz to believe he is not a murderer. Bartosz asks if Regina knew about it, and Aleksander shakes his head. Aleksander tells Bartosz that his mother is the best thing that had ever happened to him, and tries to hug him, but his son turns away and leaves.

Later, Bartosz calls his father to warn him about the barrels, but Aleksander doesn't answer the phone. Aleksander calls Charlotte instead and asks her to come to the plant. Aleksander brings Charlotte inside the room where the red barrels are and opens one. Inside the dark substance starts to rise and forms the God particle, triggering the apocalypse.


Season 3[]

  1. Dark Season 1 Episode 9: "Everything Is Now"
  2. Dark Season 3 Episode 6: "Light and Shadow"