In the novel “Police, Police, Mashed Potatoes!”, Martin Beck and his colleagues have to investigate a daring murder of a financial tycoon who traded weapons and real estate around the world. The crime was committed during a banquet in a splendid restaurant. Everyone sitting at the table with the victim wanted him dead.
But the pistol ended up in the hands of a nondescript man who walked calmly into the restaurant hall, fired, and just as calmly left the crime scene…