Detective Director Liebig (Luc Feit) is celebrating his 60th birthday at Göttingen police headquarters when the party is suddenly disrupted: there was a serious accident in the neighboring old town. A van crashed into a crowd. Charlotte Lindholm (Maria Furtwängler) and Liebig's wife Tereza (Bibiana Beglau), a doctor at the local hospital, are the first to arrive at the scene of the accident. Ilje (Adrian Djokic), the driver of the car, is taken to the hospital's intensive care unit. The investigation begins at the same time: What if it was a shooting spree? But what was Ilie's motive for committing this terrible act? To clarify this, Charlotte Lindholm (Maria Furtwängler) and Anaïs Schmitz (Florence Kasumba) dive into the world of low-wage workers.
Sarah Connor, Lena Meyer-Landrut, Klaas Heufer-Umlauf and a wildcard viewer challenge moderator Joko as a candidate in order to - literally - steal the show. The winner becomes the quiz show host of the next edition and can redesign the show as they wish. The final round will be moderated by Katrin Bauerfeind.
A married couple has disappeared - never returning from a romantic trip. Katja (Simone Thomalla) has to look after the children while the police search for the parents. The evening before, the couple wanted to celebrate their wedding anniversary with a picnic by the lake. The car, an empty champagne bottle and the couple's clothes are found there, but there is no trace of them. Everything points to a tragic swimming accident.
15-year-old Hanna (Saoirse Ronan) has spent her entire life in the icy wilderness of the Arctic Circle. Here her father Erik (Eric Bana), completely isolated from the world, trained her to survive under the most adverse conditions. The reason: Hanna is supposed to take revenge on his former colleague, CIA agent Marissa Wiegler (Cate Blanchett), who murdered her mother many years ago. When the girl switches on a tracking device one day, Erik's revenge plan begins to unstoppably roll. Wiegler sends a special team to capture the renegade ex-agent, but only Hanna finds them in the forest hideout.
Best-selling author Jack Rudd's (Matt Whelan) reading in Maxine's (Anna Baird) bookstore excites his crime fans. However, when the captivating author does not return to the packed room after the break, Detective Shepherd's (Neill Rea) ex-wife Petra (Lucy Wigmore) makes a terrible discovery on the stairs: there is the star author who has been stabbed in the back! The fact that his current work is entitled “Knife in the Back” suggests a connection.