Overview
- The episode Im Zweifel für den Zweifel airs Saturday, January 31 at 20:15 on ZDF, marking Christoph Süß's final appearance as Kriminaloberrat Helmut Zangel as he departs for private reasons to focus on BR's satirical show quer.
- A slain top chef draws the investigators back to an older case tied to his former colleague, spotlighting doubts about prosecutorial work and the risk of wrongful convictions.
- The narrative deliberately parallels the real Badewannenmord involving Manfred Genditzki, whose 2010 conviction was overturned in 2023 and followed by a state compensation agreement in 2026.
- Series mainstays Bernadette Heerwagen, Marcus Mittermeier and Alexander Held continue as the core team, with the future of the unit's leadership left open after Zangel's exit.
- Production notes highlight a sudden snowfall that changed filming conditions, as guest star Shenja Lacher prepared intensively for his role as a chef.