Witnesses are baffled as strange flying objects start appearing over Europe. Everywhere from Portugal to Romania, big questions are left unanswered. (S1, ep 4)
An Air France pilot sees a huge object over Paris, UFOs are spotted over a quiet town in Portugal, and lone drivers in Denmark experience something rather strange... (S1, ep 3)
Strange lights, a government cover-up and something odd above the woods - experts revisit the Swedish Mora UFO photos, Mussolini's UFO files and the Rendlesham forest incident. (S1, ep 2)
Unknown objects, weird lights and a shocking criminal investigation - check out Scotland's Livingston UFO, Norway's Hessdalen lights and Portugal's Castelo de Bode Dam encounter. (S1, ep 1)
Devils and Hell: Exploring the legends of Netherworld monsters like the Jersey Devil said to roam the New Jersey Pine Barrens, and Krampus, the goat-legged Christmas demon. (S1, ep 2)
Cannibals And Killers: Exploring surprising truths behind mythical monsters and legendary killers. This time, how did a fairy tale inspire the Chicago World's Fair killer? (S1, ep 1)
Did the crafty outlaw of Nottingham really exist? Or is the legend of Robin Hood and his band of Merry Men simply a myth? Experts separate fact from folklore in this special documentary.
A look at the battle to control Charles Bronson. Dubbed 'the most violent man in Britain', he is held in 'The Cage' in HMP Wakefield where he is less able to wreck, attack or take hostages.
Writer and comedian Dan Schreiber meets the people behind modern-day alien conspiracy theories, from Jesus being an alien to humanity being ruled by an evil reptilian overlord.
In Dallas, Detective Eddie Ibarra discovers a woman shot dead in the lobby of her work place. Will a video surveillance tape give him any leads? (S5, ep 14)