The authorities expect the case of Friedel Walter, alias "Dr. Mueller," to be a straightforward one: he was working as a doctor without proper credentials under a false name. But Mehlin, the man in charge of his case, knows that there is more to the story. When he was injured fleeing from a concentration camp, resistance worker Irene asked her medical student boyfriend Walter to give him medical care.
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![](https://image.tmdb.org/t/p/w92/svjHeuSsMcvyWeP3RYXDYVpMEzD.jpg)
Karla Runkehl
Irene 'Reni' Schorn, verehel. Kerster
![](https://image.tmdb.org/t/p/w92/fWjtjmyMOxXblncNwdqj7Lk1wtV.jpg)
Wolfgang Kieling
Friedel Walter
![](https://image.tmdb.org/t/p/w92/o2mir3na7qSf4Q9tmMqrtYJWkNT.jpg)
Wilhelm Koch-Hooge
Max Kerster
![](https://image.tmdb.org/t/p/w92/fIH6N0IG136FiuJ9ztoI2SYQ4fk.jpg)
Eduard von Winterstein
Professor Beheim
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