On Fenna Kremers's first day as a detective in Leeuwarden, an offender escapes. It seems that this man would like revenge and there threatening to fall some victims if he don't found fast enough. Fenna's idiosyncratic way of working is not by all her new colleagues in the taste.

During the Sneekweek there arrives a threatening letter at the headquarters. If certain requirements are not satisfied, there will be for the thousands visitors a deadly consequences. The team does everything to identify the sender of the letter and prevent an attack committed in Sneek.

Bram and Fenna travel to Vlieland when there's a body of a young man wash ashore. At first they suspected that the victim was beaten overboard. But then they discover that the boy had a reason to visit Vlieland. He was looking for something and he wasn't the only one.

During a burglary at a secondary school a locker is stolen, containing the national examinations that are about to begin. If the investigation team don't found the locker enough, there will be implications for thousands of high school students. Because of time pressure, tensions within the investigation team are high.

The brothers Carlo and Olivier were held responsible for numerous violent crimes in Friesland for years. Until one day they disappeared and nobody heard anything from them. It seems that the brothers are back, when there find a violent raid takes place in a restaurant. And they came back for a special reason.