A person sits behind a semi-transparent partition illuminated from behind, the so-called shadow wall. This person is not visible, but the participants can talk to him. Later in the program, this person usually joins the other people on stage as a quasi climax. Often, the presenter Alida Kurras clarifies issues one-on-one with one of the people involved in a separate room. Alida and her team always uncover all the circumstances in detail - in principle, she already knows all the details before the show begins, but she tries to get her guests to lay their cards on the table.—Christian_Wolfgang_Barth