Spies, assassins, surveillance, and sudden death are business as usual for the Special Branch of London's Metropolitan Police. A classic British drama from the 1970s, this gritty police procedural focuses on the veteran cops and brash newcomers dedicated to stopping terrorism and countering espionage in the nation's capital. Featuring an exceptional cast including George Sewell (Tinker, Tailor, Soldier, Spy), Patrick Mower (Callan), and Richard Leech (Doctor Who). /