Revealed Season 4: Episode Guide & Ratings

Documentary about the story of Hannibal and his famous journey from North Africa with his elephants across the Alps to attack Rome in the third century BC. Utilises historical, scientific and archaeological sources and evidence.

This documentary recounts a desperate tale of the doomed Franklin expedition and the equally desperate struggle to find out what went wrong. In 1845, Sir John Franklin, with two ships and 132 men, set out to find a route to Asia through the arctic – the fabled Northwest Passage. They never returned. Why the expedition failed became an enduring mystery. After 150 years, Franklin's records are still missing and the search for his ships and the graves of his men continues.

Looks at the story and history of Boudicca and the Iceni during the Roman occupation, and follows archaeological digs and finds in Norfolk associated with her and her tribe.

An update of January 2005's Beyond the Da Vinci Code.

Documentary looking at the rise of the dating agency in Britain since the 1930s. Considers the secrecy and shame attached to use of the early agencies, and how changing attitudes of society in the 1960s and 1970s led to greater openess and acceptance. Also looks at the very first computer dating agency. Includes interviews with those who used or ran the agencies, and archive footage.

Over 20 years before The Da Vinci Code (2003) , Henry Lincoln shocked the world with the possibility that Christ had fathered a child. Always controversial, he now explains the origins of ‘The Code’ and reveals the results of his ongoing research. From France to the Baltic Sea, he reaches startling new conclusions about our ancestors.

Documentary combining a present-tense investigation in a wintery Sofia with drama reconstructions shot on Super 16mm, and a fresh telling of the notorious ‘Umbrella Murder’ of Georgi Markov in 1978.

Documentary about the 1966 England World Cup squad and manager Alf Ramsey and how they reached the finals and won the cup. Follows the squad selections, tactics and games, using archive colour footage and interviewing surviving members of the squad.

Documentary telling the inside story of how Marks & Spencers declined and decreased in popularity over four years from 1998. Considers some of the reasons and changes in top personnel and the attempts to turn the company round.

A look at the famed love affair between Elizabeth 1 and Robert Dudley - and the shocking claim that she bore him a son.