They live the same life as millions of us. They have a lot in common: they fall in love, get married, get divorced, take care of children, and sometimes knock back a mug of beer or a glass of something stronger. And at the same time, these are completely different people: someone hates weapons, but loves chess, and someone has a phenomenal memory. Each of them has their own weaknesses, shortcomings and talents. But they all serve in the police, investigating crimes under the leadership of Martin Beck. In the novel "Police, Police, Mashed Potatoes!" Martin Beck and his colleagues will have to investigate the daring murder of a financial tycoon who sold weapons and real estate around the world. The crime was committed during a banquet in a luxurious restaurant. Everyone who sat at the table with the victim wished her death. But the gun ended up in the hands of an inconspicuous man who calmly entered the restaurant, fired and just as calmly left the crime scene...