Prosecutor Reuther calmly confiscates he handgun brandished by his elderly neighbor Elisabeth 'Betty' von Bensing when she reports a break-in for which there is nor proof, but next morning she's found murdered by insulin overdose. First suspect is veterinary student Roman Blau, a charming klutz whose enjoyable company she rewarded with free lodging in her lavish mansion, a privilege enjoyed much longer by the middle-aged Kowalski couple, her de-facto janitors, who expected to inherit the home. Daughter Susanne is caught breaking the seals to search in vain for mother's gold coins, meant as 'funeral fund'.
—KGF Vissers