Timewatch is a long-running British television series showing documentaries on historical subjects, spanning all human history. It was first broadcast on 29 September 1982 and is produced by the BBC, the Timewatch brandname is used as a banner title in the UK, but many of the individual documentaries can be found on US cable channels without the branding.
Timewatch (Season 30)

Code-Breakers: Bletchley Park's Lost Heroes (Episode 1)
Air date: 2011-10-25
Runtime: 60 min
Overview: Documentary revealing the secret story of how two men hacked into Hitler's personal super-code machine. Their break turned the Battle of Kursk and powered the D-Day landings.

The Most Courageous Raid of World War II (Episode 2)
Air date: 2011-11-01
Runtime: 60 min
Overview: Lord Ashdown tells the story of the Cockleshell Heroes, who took part in one of the most audacious commando raids of World War II - to blow up enemy shipping in Bordeaux harbour.

Dam Busters: The Race to Smash the German Dams (Episode 3)
Air date: 2011-11-08
Runtime: 60 min
Overview: James Holland presents an analysis of the 1943 mission to destroy German dams with a brand-new weapon - the bouncing bomb. Extraordinarily, the raid almost never happened.

Double Agent: The Eddie Chapman Story (Episode 4)
Air date: 2011-11-15
Runtime: 60 min
Overview: Ben MacIntyre reveals the true story of Britain's most extraordinary wartime double agent, Eddie Chapman. Featuring remarkable footage of Chapman three years before his death.
