The Franklin Northwest Passage Expedition of 1845 is perhaps the greatest disaster in the history of exploration--all 129 men vanished, as did the expedition's two ships, HMS Erebus and Terror. Over the next 150 years, searchers found bones, clothing and a variety of relics. Inuit narratives provided some of the details of what happened to the frozen, starving sailors after they deserted their ice-locked ships in 1848. Then, in 2014...