River of the Gods by Candice Millard

For millennia the location of the Nile River’s headwaters was shrouded in mystery. In the 19th century, there was  a frenzy of interest in ancient Egypt. At the same time, European powers sent off waves of explorations intended to map the unknown corners of the globe – and extend their colonial empires.

Richard Burton and John Hanning Speke were sent by the Royal Geographical Society to claim the prize for England. Burton spoke twenty-nine languages, and was a decorated soldier. He was also mercurial, subtle, and an iconoclastic atheist. Speke was a young aristocrat and Army officer determined to make his mark, passionate about hunting, Burton’s opposite in temperament and beliefs.

From the start the…