Street gang leader Robert 'Rob' Klein (22) is fatally shot with a revolver registered by youth worker Martin Gruber, once captain Michael Kaiser's partner, who was blamed for a female colleague's death is similar circumstances, from whose safe it went missing. Forensic brilliant intern Benedikt 'Ben' Förster makes his debut. The case also bugs Joe due to his own gang past. Martin's pubertal charge Kevin Scheuerle had access, but the pair provides each-other dubious alibis. Plausible suspects are victim's brother Alex Klein, probably to weak to inherit the top dog position for long, and ruthless rival Miro Hauser, whose bid to succeed Robert is 'supported' by promising revenge on presumed killer Kevin and knocking down Alex for opposing this, having a crush on Jasmin, Kevin's big bitch sister and legal guardian. Selma and Kaiser fail to provide the Scheuerles proper protection, with dire results. Jasmin's dark secret proves key to the case.
—KGF Vissers