From the author of the bestselling Neanderthal comes this novel of gripping suspense and scientific conquest–a page-turning historical mystery that brilliantly explores the intrigue behind Darwin and his theory of evolution.It’s 1831, and aboard HMS Beagle the young Charles Darwin sets off down the English Channel for South America. More than 150 years later, two ambitious scholars pursuing their obsession with Darwin (and with each other) come across the diaries and letters of Darwin’s daughter. What they discover is a maze of violent rivalries, petty deceptions, and jealously guarded secrets, and the extraordinary story of an expedition embarked upon by two men. Only one returned–and changed history forever.