Socialite yacht owner Peter Clemens complains about 'borrrowing' and alleged diamond watch theft by his marina neighbor, who is dragged to the precinct for questioning and turns out to be Franzi's 'chaotic' father, adventurer Karl-Heinz 'Rufi' Rufenberg. Hans leads the search for a bloody knife used in the stabbing of homeless Asmus Theissen, who is found having possessed and himself being robbed of the watch, which Peter's wife admits having given him, but she hides the motive from her past, relevant to the entire family.
—KGF Vissers