Moving as one, the group surged toward the target. Climbing over a rugged mound of ice, they at last saw the Terror before them. At one hundred and two feet, the vessel was nearly identical in size and appearance to their own ship, down to the black-painted hull with a wide gold band. The Terror barely resembled a ship now, however, with its sails and yardarms stowed away, and a large canvas awning covering her stern deck. Snow had been shoveled up in mounds nearly to the rails for insulation, while the mast and rigging were coated in a thick layer of ice. The stout bomb ship, as she was originally designated, now looked more like a giant spilled carton of milk.

Fitzjames boarded the ship, where he was surprised to see several crewmen scurrying about the ice-covered deck. A midshipman approached and led Fitzjames and his men down the main hatch and into the galley. A steward passed around shots of brandy while the men shook the ice from their clothes and warmed their hands by the cookstove. Savoring the liquor as it warmed his belly, the captain noticed a beehive of activity in the dim confines, with crewmen shouting and shoving stores about the main passageway. Like his own men, the crew of the Terror were frightful souls to look at. Pallid and emaciated, most of the men fought the advanced ravages of scurvy. Fitzjames had already lost two of his own teeth to the disease, a vitamin C deficiency that causes spongy gums and bleeding scalp. Though casks of lemon juice had been carried aboard and rationed regularly to all the crew, the juice had lost its efficacy over time. Combined with a shortage of fresh meat, the disease had left no man untouched. And as the sailors all knew, left unchecked, scurvy could eventually prove fatal.

The captain of the Terror presently appeared, a tough Irishman named Francis Crozier. An Arctic veteran, Crozier had spent the better part of his life at sea. Like many before him, he had been drawn to the search for a passage between the Atlantic and the Pacific through the unexplored regions of the Arctic. The discovery of the Northwest Passage was perhaps the last great feat of seaborne exploration left to conquer. Dozens had tried and failed, but this expedition was different. Armed with two Arctic-ready ships under the command of an enigmatic leader in Sir John Franklin, success had been all but guaranteed. But Franklin had died the year before, after attempting a dash for the North American coastline too late in the summer. Unprotected in the open sea, the ships became trapped when the ice closed in around them. The strong-willed Crozier was determined to lead his remaining men to safety and salvage glory from the failure that was lying before them.

“You’ve abandoned the Erebus?” he asked Fitzjames pointedly.

The younger captain nodded in reply. “ The remaining crew members have gone out of their heads.”