A prisoner's death sparks questions about a closed murder case, spurring former detective Mike Atlas and prosecutor Jule Andergast to seek answers.

Tom investigates an unsettling new murder while Jule and Mike combine two sets of puzzle pieces. Trying to reach Mike, Joachim approaches Tinka.

A desperate maneuver puts one of Mike's loved ones in harm's way. Jule and Mike face skepticism in their hunt for the truth about Judge Herres' death.

Tom and Jule challenge Corinna's judgment. A sudden change pushes Mike to consider his future, while his investigation stirs up ghosts from the past.

A shocking confession points Mike and Jule toward the truth, but will there be enough time to stop a single-minded killer from claiming another victim?