Sitcom by James Cary, set in Bletchley Park in 1941. News of a security breach brings everyone in Hut 33 under suspicion. Then Nancy arrives, a beautiful stranger who seems to want to know everything about everybody. Charles ...... Robert Bathurst Archie ...... Tom Goodman-Hill Minka...... Olivia Colman Gordon ...... Fergus Craig Mrs Best ...... Lill Roughley Joshua ...... Alex MacQueen.