The puncture wound is deep: Prof. Julius Gann has lost a lot of blood. When he and his wife returned home from a charity gala, an unknown attacked and stabbed them in the villa. While all help came too late for Carmen Gann, Prof. Gann is now being treated in his own private clinic - and even in this situation he remains the boss. Willingly follow Dr. Wolf and the nurse Sylvia Keller followed his resolute instructions. At home, too, Prof. Gann obviously set the tone. His son Jonas takes note of the attack on his parents with surprising indifference. What is the youngster hiding from inspectors Ballauf and Schenk? Apparently, at the time of the crime, not only his father, but also he himself was heavily intoxicated.
Was the robbery just faked? Stefan Koschinski is also an urgent suspect. His wife had died in an operation performed by Prof. Gann - he sued the head of the clinic. But the lawsuit was dismissed. Prof. Gann knows a loyal partner in Thomas Bernstein, with whom he has been running the clinic for many years. What he doesn't know: Bernstein wants to sell his shares in Prof. Gann's life's work...