Her dreams of becoming a movie star behind her, Thekla Ahrens returned to the theater, her first love, and moved to Berlin. From 1939 on and throughout the 1940s, she was active there on stage and in radio plays.
In the middle of the 30s she also impersonated smaller roles in few movies.
The actress Thekla Ahrens began her career at the theater where she made her debut in 1926 at the Landestheater in Oldenburg. In the next years followed engagements in Hamburg, Bern, Nuremberg and Berlin.
Thekla Ahrens was married with the lawyer and film producer Ernst Oskar Schmid (Thekla-Film).