Yvonne and Heiko have a visitor, Heiko’s old friend Piet Bernsdorff, whose daughter is in the hospital in critical condition. Their evening ends prematurely when a Deputy Secretary’s vehicle blows up and Yvonne drives to the scene of the explosion. The chauffeur, who was killed in the blast, works for a security company. Deputy Secretary Görner had exited the vehicle before it exploded. Both the State Security Department and the Homicide Commission are charged with investigating – but one thing is clear, the Deputy Secretary was the intended victim.