It is 1941 and Nazi Germany, having won the Battle of Britain, is a harsh occupying force in the UK. Renowned London murder detective Douglas Archer is caught between his brutal new SS bosses and the ruthless British resistance as he investigates what looks like a black market-related murder. Determined to uphold the law and protect the ones he loves Archer soon finds himself drawn into a treacherous plot with global implications. Which way will this decent man turn? SS-GB is based on the 1976 novel of the same name by Len Deighton.