And here we are in Brazil during the rubber rush, where hunters for easy money make deals with their conscience, not disdaining even the lowest methods. However, Jan Smuga is not like that. As an employee of Nixon's company, Smuga equally successfully finds a common language with both the Indians and the residents of Manaus, where the main rubber warehouses are located. And even in a wild forest, an experienced traveler feels in his element. Under his leadership, everything is going swimmingly in the rubber tappers' camp. And yet, Smuga finds himself drawn into gang warfare: in an attempt to catch up with the killers who ravaged Nixon’s camp and brutally killed his nephew, the trapper disappears without a trace in the wild jungle. Natasha and Zbyshek Karski, who helped Smuga in Manaus, do not know what to think, because about six months have passed since the disappearance of their mentor. Having received alarming news from friends, Tomek Vilmovsky, his wife Sally and Captain Nowicki immediately set off for Brazil. A young man is ready to walk up and down the banks of the Amazon just to find his missing comrade. More than one generation of young book lovers has grown up on stories about the fearless Tomek Wilmowski, written by the Polish writer Alfred Szklarski. Here is the seventh novel from this series - “Tomek at the Sources of the Amazon”, the translation of which has been re-verified and supplemented with interesting and informative popular science references. Wonderful illustrations for the book were created by artist Vladimir Kanivets.