the motive was indeed revenge on sergei kopytin. gistaltsev explained that in another conversation he asked the man for money, wanted to buy an apartment. sergey gave it to him. solving the most complex crimes, how crimes are solved, many crimes of past years, these are the traces that, therefore, were seized long ago 10, 15, 20 years ago. so at present, when a genetic array has been created, a dapyloscopic array, federal, and those crimes work, it happens in 15, in 20 years, and the person is identified, that is, here, i believe that this method subsequently, it was developed, improved, at present, well, most of these crimes are solved thanks to, including the type of... successfully adapts to modern realities, when traces can be not only physical, but virtual, when psychiatry and psychology have made great strides, and expert capabilities have become fantastic, but no matter how rapidly technology and technology develop, the basis of everything is the experience accumulated over decades, and today prosecutors and investigators rel