Michael Palin brings this extraordinary ship back to life, following it from its launch in 1826 to the epic voyages of discovery that led to glory in the Antarctic and to ultimate catastrophe in the Arctic. He explores the intertwined careers of the men who shared its journeys: the dashing James Clark Ross who charted much of the ‘Great Southern Barrier’ and oversaw some of the earliest scientific experiments to be conducted there; and the troubled John Franklin, who at the age of sixty and after a chequered career, commanded the ship on its final, disastrous expedition.