Part I: The expedition. Franklin's last mission ; HMS Erebus and Terror ; Frozen in

Part II: The hunt. The hunt begins ; Lady Franklin's mission ; The Arctic Committee ; Ghost ships ; Starvation Cove

Part III: The discovery. An Inuk detective ; He who takes long strides ; Operation Franklin ; The hunt goes underwater ; Skull Island ; Fast ice ; "That's it!" ; Terror Bay ; An offering to the dead.