In the sixth season of 'Moordvrouw', the team members get together with Dries van Zijverden, the new team manager, who makes everyone a pleasant first impression. Except at Fenna. She soon has the suspicion that Van Zijverden has something to hide, and because he does not want to say anything about it, she researches herself. Meanwhile, Fenna, Evert and Liselotte work on a variety of issues. They are dealing with large-scale fraud in the upper world and the exploitation of Polish labor. They are faced with the dramatic consequences of a lifeguard's acquittal, which has drowned a little boy at a moment of inattention. They bind the battle with a vlogger who might be involved in a double kill. They also experience the dangers of online dating and are faced with corruption within Justice. Samantha is again waiting for all the businesses. She is currently working on internal affairs and does not leave unused opportunities this season to make the team members sick. Finally, someone who seems to keep an eye on Fenna and leaves strange letters for her. Who is this stalker?