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During World War II, the English mathematical genius Alan Turing tries to crack the German Enigma code with help from fellow mathematicians while attempting to come to terms with his troubled private life.

In 1952, four women who worked at the wartime code-breaking centre, Bletchley Park, reunite to track down a serial killer.

This is a documentary about unsung heroes of World War II. In 1943, a 24-year-old maths student and a GPO engineer combined to hack into Hitler's personal super-code machine - not Enigma but an even tougher system, which he called his 'secrets writer'. Their break turned the Battle of Kursk, powered the D-day landings and orchestrated the end of the conflict in Europe. But it was also to be used during the Cold War - which meant both men's achievements were hushed up and never officially recognized.

Thanks to the movie "The Imitation Game" many people know that Alan Turing was one of the men behind breaking the german coding machine Enigma during World War II. But an equally important person was Gordon Welchman, who invented the socalled traffic analysis. This movie tells the story of Gordon Welchman.

The first two episodes tell the story of the amateur radio hams who listened to German Morse code broadcasts during World War II and passed their transcriptions to mathematicians and computer programmers at Bletchley Park who decoded the German "Enigma" codes, amid great secrecy. By uncovering the Germans' military plans, it is estimated that they shortened the war by between 6 and 12 months, and saved thousands of lives. The third and fourth episodes recount the propaganda programmes that were broadcast from Woburn Park, with the aim of demoralising the German military and general public.

The team returns to Bletchley Park near Milton Keynes. Pieces under examination include an ornate vase rescued at the last minute from the dishwasher, a teddy bear with a secret story, a surprise valuation, and a stunning art deco brooch brings the house down.

Professor Brian Cox puts three and a half centuries of British science under the microscope to reveal what science really is, who the people are who practice it and how it is inextricably linked to the past, present and future of us all. In episode two, Method And Madness, Brian celebrates Britain's pivotal role in creating modern science. From performing Isaac Newton's iconic light experiment, to meeting a wartime code breaker and making hydrogen explosions, Brian introduces the obsessive, eccentric, visionary characters who dragged Britain into the modern world by developing a powerful new way to investigate nature. Brian discovers that there seems to be a 'scientific mind' when he meets psychologist Professor Simon Baron-Cohen. Professor Baron-Cohen has found that as a group, scientists display powers of concentration and minute focus associated with autism - qualities which are a huge advantage when undertaking genuinely novel research. The downside of extreme focus is that scientists - even such luminaries as Newton and Cavendish - are sometimes only interested in research for its own sake. Spreading the word isn't really part of their agenda. But thanks to the oldest scientific journal in the country - the Royal Society's Philosophical Transactions - a tradition of sharing ideas with other scientists was born. Peer review became an integral part of science both past and present, resulting in research that is as transparent and trustworthy as possible. Brian concludes that it is this scientific method, including publishing and peer review, which ensures accuracy during investigations.