Young Rico Moeller is found stabbed to death in the park. Gardener Piet Cornelis, who is on probation and has a history of violence, is a suspect. Ina and Jan question Rico’s well-off, shy classmate Nikolaus Behrendt, who had become friends with the victim. But it is Nikolaus’ father Marius who is behaving suspiciously. Was he trying to protect his son from Rico and his criminal activities?