This book is a vivid and exciting travel memoir as well as a detailed scientific field journal covering biology, geology, and anthropology that demonstrates the author’s keen powers of observation, written at a time when Western Europeans were still discovering and exploring much of the rest of the world. The author's five-year journey took him from the coasts of South America, Australia, and Africa to the South Pacific islands, during which he collected and documented the natural history of these areas. The voyage and the specimens he brought back would later form the basis for his famous theory of evolution.

In an unnamed South American country, a lavish birthday party is thrown for a powerful businessman, with a famous opera singer as the guest of honor. The party is interrupted by a group of terrorists who take everyone hostage, demanding the release of their imprisoned comrades. As weeks turn into months, the hostages and their captors form unexpected bonds. The story explores the relationships that develop under these extraordinary circumstances, and the transformative power of music and love.

This book is a thrilling account of an adventurous journey down the entire length of the Amazon River. The narrative documents the trials, tribulations, and triumphs of the first team to ever attempt such a feat. The journey, filled with dangerous rapids, hostile natives, and internal conflicts within the team, provides a fascinating exploration of not just the Amazon, but also of human nature under extreme circumstances.