She has one blue and one brown eye, but that's not the only thing that makes Claudia Tiedemann extraordinary. Even as a child, she excels in school. Her parents Egon and Doris hope she'll go on to study at university. Some 30 years later in 1986, Claudia Tiedemann becomes the first woman to be in charge of a nuclear power plant. As a career woman and single mother, Claudia has little time for sentimental things. She is impatient and strict with both her elderly father and shy daughter Regina.
Claudia hasn't been seen in Winden for years by the time 2019 comes along. She's become a time traveler, restlessly traveling from one decade to the next. Claudia is the biggest adversary of Noah, Adam, and the Sic Mundus cult, but the Stranger seems to be her ally.
At the same time, she's an old woman who seems full of regrets for everything she neglected in her life, particularly her relationships. Is she good or evil? The Stranger says, "In the end she became exactly what she was trying to fight."
The dead body
Claudia arrives just after Mads Nielsen's body materializes in the bunker in November 2019. She convinces Peter Doppler and Tronte Nielsen to leave the body in the forest where the police will find it. She claims she wants to change the course of history and prevent Mads and the other children from dying. As proof, she gives Tronte and Peter her leather notebook, but a few pages are torn out.
The time machine
On her first day as director of the nuclear power plant, Claudia Tiedemann discovers that there was an accident there in the summer of 1986, which was subsequently covered up. She wants to go public with the information, but her predecessor Bernd Doppler convinces her to stay quiet.
Bernd shows Claudia an entrance to the Winden caves on the plant site. She finds countless yellow barrels filled with atomic waste – and a poodle. The dog looks exactly like Gretchen, Claudia's dog who ran away in 1953, and it seems to recognize her. She takes the poodle with her.
Not long after, a young man comes to her office. He is newly arrived in Winden and looking for work. Claudia hires him for a confidential job: She asks him to close off the cave with the yellow barrels.