In the summer of 1989, the sister of Hamburg's LKA chief Thomas Bethge disappears without a trace. For almost three decades, he investigates the mysterious criminal case, before he gets on the trail of a serial killer.
As they continue their rogue investigation, Thomas, Anne, and Frank put the pieces together between Jürgen, the Isefort murders, and Barbara’s disappearance. Will Thomas and his family finally get closure after nearly 30 years?