In 1831 Charles Darwin set off in HMS Beagle under the command of Captain Robert Fitzroy on a voyage that would change the world. Tory aristocrat Fitzroy was a staunch Christian who believed in the sanctity of the individual in a world created by God: Darwin the liberal cleric & natural historian went on to develop a theory of evolution that would cast doubt on the truth of the Bible & the descent of man. The friendship forged during their epic expeditions on land & sea turned into bitter enmity as Darwins theories threatened to destroy everything Fitzroy stood for.. .