Wikipedia
SS-GB is an alternate history novel by Len Deighton, set in a United Kingdom conquered and occupied by Germany during the Second World War. The novel's title refers to the branch of the Nazi SS that controls Britain.
SS-GB is an upcoming UK dystopian alternate history television series produced by BBC Films and Sid Gentle Films. The series is based on the 1976 novel of the same name by British author Len Deighton. The story is an alternate history of the world in which the Axis powers won World War II. The King is a prisoner and Winston Churchill has been shot. The story follows a police detective, Douglas Archer, who in following up a routine murder case uncovers a web of intrigue involving British atomic weapons research secrets, which the Abwehr is keen to get its hands on.