dr Steinfeld is found dead in his practice. The renowned psychiatrist specialized in war trauma, among his patients are civilian victims of armed conflicts as well as traumatized military personnel at the US Air Base in Ramstein. People with a wide variety of experiences of violence, one of whom may have turned against their therapist. Heather Miller, for example, who was used as a "screener" in the drone war and is now an orderly officer in Germany because she got depression.
Above all, however, the case of Mirhat Rojan is captivatingLena Odenthal's attention: The Kurd lost his two children in an American drone attack in Iraq, now lives with his brother in Ludwigshafen and is known to the police because he wanted to draw attention to his fate with public campaigns. The Rojans have disappeared from the scene, but the more Lena and Johanna deal with the two, the more concrete the suspicion that they are planning a drone attack: an assassination attempt on Jason O'Connor, Secretary of Defense in the US Department of Defense, who is in Germany is expected.