A former client of Dr. Franck is killed at night and the police files the case as a settling of scores. Rainer is sure that the boy had left the crime and wants to help his mother to find the truth: he and Matula investigate about young Heike Landers, who was unwillingly involved in the shooting and who is recovering from the injuries in a clinic. Her involvement seems initially a pure casualty, but now someone is threatening her as a dangerous witness.
—AleX_DJ