In September 2014 the wreck of a sailing vessel was discovered at the bottom of the sea in the frozen wastes of the Canadian arctic. Its whereabouts had been a mystery for over a century and a half. Its name was HMS Erebus. Now Michael Palin - former Monty Python stalwart and much-loved television globetrotter - 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.