Franziska received 21 letters after her contact ad from a certain Fabian Stiller. The Munich waitress only finds out that his real name was Florian Haugk when her admirer is found dead.
Unfortunately the movie 21 Liebesbriefe is not yet available on HBO Max.
| Directing | Nina Grosse | Director |
| Sound | Holger Rogge | Sound Mixer |
| Camera | Benedict Neuenfels | Director of Photography |
| Sound | Gregor Arnold | Sound Designer |
| Writing | Nina Grosse | Writer |
| Writing | Friedrich Ani | Writer |
| Production | Oliver Berben | Producer |
| Editing | Patricia Rommel | Editor |
| Art | Marion Schubert | Production Design |
| Production | An Dorthe Braker | Casting |
| Art | Benedikt Herforth | Production Design |
| Production | Dieter Salzmann | Executive Producer |
| Costume & Make-Up | Mika Braun | Costume Design |
| Sound | Frank Schreiner | Sound |
| Sound | Sebastian Riegel | Sound |
| Sound | Marco Meister | Music |
