After HMS Hood is destroyed in minutes by a single salvo, the Royal Navy commits everything it has to hunting down the Bismarck. The German battleship is already wounded, a shell has severed her forward fuel lines, and she is trailing oil as she runs for the cover of Luftwaffe air cover at Brest. A Catalina flying boat piloted by Ensign Leonard B. Smith finally spots her on 26 May, less than 800 miles from safety, and a squadron of obsolete Swordfish torpedo bombers gets one improbable hit, from pilot Kenneth Pattisson, that jams her rudders. Dan Snow presents the final chase, with naval historian Nick Hewitt, National Maritime Museum curator Andrew Choong, and author Angus Konstam laying out how HMS King George V and HMS Rodney close in for the kill. Archival photographs, ship diagrams, and expert interviews reconstruct the mechanics of the pursuit hour by hour, from the fuel leak to the jammed rudder to the final battering that ended the Kriegsmarine's flagship.