Holmes and Watson travel to Europe to escape Moriarty’s vengeance.

Sherlock faces perhaps the most chilling enemy of his long career: the powerful and seemingly unassailable Culverton Smith – a man with a very dark secret indeed.

Why is someone destroying images of Margaret Thatcher? Is there a madman on the loose? Or is there a much darker purpose at work?

Deaths under mysterious circumstances create paranoia among the men, and some of the crew may be considering mutiny.

A cunning attack on the ships proves the men are not battling an ordinary bear and that the region’s Inuit culture may hold a key to their survival.

With something now stalking the ships, the captains debate their options, testing their loyalty to one another against their duty to their crews.

After a long winter trapped in the ice, scouting parties are sent out in search of open water. One of the teams makes a frightening discovery.

An accident at sea cripples a Royal Navy expedition 200 miles from finding the Northwest Passage, forcing its captains to make dire choices.