Who is the man who has been deceiving the art world for hundreds of years? Every so often, unknown works by a Renaissance master turn up at auctions and in private collections – flawlessly executed, painted on sixteenth-century panels, and yet… forgeries. Legend has it that their creator is "Gemello", a painting genius and master forger who has lived for several hundred years. Police forces across Europe have been trying in vain to catch him since the time of Napoleon. When the foundation of a conservative politician announces an exhibition of unknown portraits of Marcin Luter and Jan Kalwin, Jakub Kania, a former prosecutor at the Institute of National Remembrance (IPN) and now an expert in insurance fraud, grows suspicious. Are these really masterpieces from centuries ago, or a huge swindle that will earn the foundation millions? His investigation takes him from present-day Warsaw, through pre-war Kraków and Vienna, to post-war Europe. Together with the journalist and art critic Ludmiła Ungier, Kania discovers that the hoax goes much further than anyone could have imagined. Who is "Gemello" really? Is the story of the forger true? Or does something more dangerous than the forging of paintings lie behind this mysterious racket? Sobowtór is not only a dazzling intrigue, but also a story about the falsification of history – both where works of art and human memory are concerned. And it has a gripping plot that does not let you put the book down for a moment. Firstly, I don't know how to write, but I do know what it means to read a good crime novel. By the second chapter you forget that you are being paid for it. Secondly, you badly want to peek at the last pages to find out who HE is. You don't. Because you would hate to waste all those hot lines leading up to it. And thirdly – I love that voice beside me: "Mariusz, have you gone mad, are you sleeping with Siembieda again?". Mariusz Bonaszewski, narrator of the Jakub Kania series