"The Broken Lands"-a treacherous labyrinth of ice through which the fabled Northwest Passage was sought for centuries. Cabot, Frobisher, Hudson, Parry and Ross were all defeated, and the names on the maps testify to their despair: Bay of God's Mercy, the Devil's Cape, Savage Isles, and Repulse Bay. Determined to succeed where the rest had failed, Sir John Franklin-"the Lion of the Arctic"-set sail from Greenland in 1845. His two ships, the "Erebus"...