In this modern day Indiana Jones-style expeditions, travel the globe to unveil the mystery of the Holy Grail, the Secrets of the Dark Arts, the Philosophers Lost Stone, the Lost Ark and more to unlock the Ancient X Files.
Scientific advances since the Shroud of Turin was last tested in 1988 reveal letters hidden around the head of the mysterious religious relic – but who wrote them? And why?
Mon, 09 Nov 9.30am
Following clues in the Old Testament, an archaeologist believes he has discovered the location of the original cities of sin – Sodom and Gomorrah. Is this the origin of God's wrath on Earth?
Mon, 16 Nov 9.30am
New images of the Mona Lisa, taken to record its fading colours, may reveal more than cracks in the varnish. Follow the trail of a potential code in one of the world’s most famous paintings.
Mon, 23 Nov 9.30am
The Incas ruled most of South America 500 years ago without a written language, but they may have had a three dimensional communication system made from knots.
Mon, 30 Nov 9.30am
Does Christ’s crown of thorns, worn during his crucifixion, now reside in Paris? A Jesuit priest investigates a thorn from the Crown that appears to miraculously bleed.
Around the world, bodies have been dug up with stakes, stones or knives driven through their hearts. One man suspects a link and goes on the trail of the world's oldest suspected vampires.
Mary Magdalene has long been known as a repentant sinner and witness to the resurrection but newly uncovered Christian artefacts point to her as a victim of the biggest conspiracy in history.
Could a series of giant standing stones constructed some 12,000 years ago in Turkey represent the beginnings of the first civilised society and the birth of religion?
An archaeologist unearths new evidence that Christians on pilgrimages to Jerusalem are worshipping at the wrong sites.
An underwater archaeologist follows a trail of evidence across Mexico and Guatemala, in search of the entrance to the Mayan underworld of Xibalba.
Flood stories, similar to the Old Testament tale of Noah’s Ark, appear in ancient cultures around the world. Now new archaeological evidence may reveal the cause and location of this great flood.
The legendary Joan of Arc was famously burnt at the stake for being a witch, but when an author finds evidence suggesting Joan may have survived her execution, history could be changed forever.
Could the mysterious medieval sword lodged in stone in a remote church in Italy be connected to the legend of King Arthur? A world expert on Arthurian legends is on a mission to find out.
Never miss a Nat Geo moment
Join our curious community and you'll have access to some great features!
Personalised content reflecting your interests on the site
Watch exclusive videos before anyone else
Favourite content that you like or want to check out later
Free SMS and Email reminders so you never miss a show
Get notified when content that interests you is published
Share your photos on Snap! that could appear on TV
Share your thoughts and opinions on various matters
Receive a monthly newsletter with loads of great content