Prof. Boerne gives a humorous farewell speech to his old friend Friedhelm Fabian and his wife Veronika. In addition to the Münster celebrities, Commissioner Thiel, assistant Silke Haller and public prosecutor Wilhelmine Klemm also listen to the spirited statements. But crime never sleeps and on the other side of town a dissatisfied client threatens his lawyer Nikolas Weber. When Inspector Thiel was called to his run-down office the next morning, he immediately recognized the dead man as Nino Agostini's house and court attorney. Thiel believes the dangerous mafia boss is capable of cold-blooded murder. Thiel would also love to convict Agostini and put him behind bars forever. But the dead man's former partner, Erik Nowak, is also suspicious.
He spent the last few weeks in a psychiatric clinic and is currently visiting his father's farm in Münster... Meanwhile, in forensic medicine, Prof. Boerne is struggling with the consequences of last night. It was getting late at the farewell party and Silke Haller does not miss the fact that Boerne mourns the departure of Veronika Fabian almost more than that of his childhood friend Friedhelm...