Overview
- The 90-minute special, Weil du böse bist, airs on Das Erste at 20:15 on January 5, 2026, and has been available in the ARD Mediathek since December 31, 2025.
- The case revisits the disappearance of Anja Liebke with troubling evidence including a bloodied boat and a knife with initials, later followed by the discovery of remains.
- The established investigator team returns with Sven Martinek as Finn Kiesewetter, Ingo Naujoks as Lars Englen, Julia E. Lenska as Nina Weiss, and Jonas Minthe as Gregor Michalski.
- Season 12 continues with weekly Monday episodes in the early-evening slot, including episode six airing at 18:50 on January 5 on Das Erste.
- Producers say filming proceeds after the special for a thirteenth season slated to broadcast in autumn 2026 on Das Erste.