Collector of the Lost Treasure. A daring explorer embarks on one of the most adventurous expeditions ever: Alfred Russel Wallace and his research journey into the Amazon region. Setting off on his own in 1848 from England to Brazil, the nature enthusiast Alfred Russel Wallace aims to study the flora and fauna of the Amazon. From Pará (now Belém), Wallace makes his way to the upper reaches of the Rio Negro, entering areas that no European had set foot in before. His observations of monkey and butterfly species on both riverbanks lead him to the beginnings of the theory of evolution, which he will later develop concurrently with Charles Darwin. The results of his expedition are remarkable, but the venture ends in disaster: plagued by diseases, sand fleas, and...