Zahi journeys in to the Five Chambers with the fellows in tow. Together they will document the ancient graffiti on the walls of the Chambers, proving Zahi's theory that ancient Egyptians, not slaves, built the Pyramids at Giza.

A daring diving operation produces potential evidence of some 140 million dollars in gold at the bottom of Lake Michigan, while an informant shares a 50-year-old secret that shocks and energises the team.

Experts believe an obscure sketch that was stolen and hidden by a Cardinal may be part of Da Vinci's cryptic prophecies. The team uncovers Da Vinci's controversial political views, his obsession with death, and the mystery of Mona Lisa's identity.

Are sacred places the product of man's reverence for gods - or the result of contact with ancient space travellers? Did man encounter divine beings at these holy places, or might they have met ancient extraterrestrials?

The team uncovers shocking evidence of a web of underground tunnels connecting the homes of key players in Kevin's theory, offering possible proof that members of the 4th Michigan Cavalry returned home with millions in Confederate gold.

When the Vieira brothers head west to explore an island shrouded in mystery, they uncover compelling evidence of giants, but their investigation takes a dark turn.

Witness what could be the first-ever audio recording of New Mexico's bizarre 'Taos Hum', which many say has been plaguing the area for decades. Plus, paranormal activity in Oklahoma and other strange phenomena.

In this series, renowned underwater archaeologist and adventurer Barry Clifford, along with a crack team of on-land explorers and experts, attempts to solve a mystery that dates back hundreds of years.

Zahi journeys in to the Five Chambers with the fellows in tow. Together they will document the ancient graffiti on the walls of the Chambers, proving Zahi's theory that ancient Egyptians, not slaves, built the Pyramids at Giza.

A daring diving operation produces potential evidence of some 140 million dollars in gold at the bottom of Lake Michigan, while an informant shares a 50-year-old secret that shocks and energises the team.

Experts believe an obscure sketch that was stolen and hidden by a Cardinal may be part of Da Vinci's cryptic prophecies. The team uncovers Da Vinci's controversial political views, his obsession with death, and the mystery of Mona Lisa's identity.

Are sacred places the product of man's reverence for gods - or the result of contact with ancient space travellers? Did man encounter divine beings at these holy places, or might they have met ancient extraterrestrials?

The team uncovers shocking evidence of a web of underground tunnels connecting the homes of key players in Kevin's theory, offering possible proof that members of the 4th Michigan Cavalry returned home with millions in Confederate gold.

When the Vieira brothers head west to explore an island shrouded in mystery, they uncover compelling evidence of giants, but their investigation takes a dark turn.

Witness what could be the first-ever audio recording of New Mexico's bizarre 'Taos Hum', which many say has been plaguing the area for decades. Plus, paranormal activity in Oklahoma and other strange phenomena.

A new investigation into the true fate of the Knights Templar is launched. Did the order really fall in 1307? Or did the powerful Knights continue on in secret? The team begins their investigation in Jerusalem, the epicentre of the Templar's power.

Zahi uncovers a cache of mummies at a dig site at Saqqara and discovers a rare and important piece of Egyptian history: a beautiful anthropoid sarcophagus from the 26th Dynasty!

The team uncovers shocking evidence of a web of underground tunnels connecting the homes of key players in Kevin's theory, offering possible proof that members of the 4th Michigan Cavalry returned home with millions in Confederate gold.

Decoded traces the progression of the mob from Whitey Bulger's fearsome Irish Mafia, to today's Mexican cartels who are bringing their violent operations onto American soil, and the Cyber Mafia-online gangsters who can steal your money and identity.

Could gold be the ultimate link between humans and aliens? A church in southern France is said to hold the key to alchemy - is it also a gateway to another part of the universe?

It's early morning in Saqqara and Zahi is getting ready to open two sealed tombs for the first time in thousands of years, but Zoe is late again and his patience is wearing thin.

The body of a South American mummy has a number of visible wounds, and a large hole in his skull. The team work to find out: was the man a victim of crime?

Ross tries to find out more about his sea-faring Great Grandfather, Arthur Pop Chalmers. He discovers that Pop served in the Merchant Navy and survived three shipwrecks. Inspired to know more, he links up with maritime archaeologist, Mallory Haas.

A new investigation into the true fate of the Knights Templar is launched. Did the order really fall in 1307? Or did the powerful Knights continue on in secret? The team begins their investigation in Jerusalem, the epicentre of the Templar's power.

Zahi uncovers a cache of mummies at a dig site at Saqqara and discovers a rare and important piece of Egyptian history: a beautiful anthropoid sarcophagus from the 26th Dynasty!

The team uncovers shocking evidence of a web of underground tunnels connecting the homes of key players in Kevin's theory, offering possible proof that members of the 4th Michigan Cavalry returned home with millions in Confederate gold.

Decoded traces the progression of the mob from Whitey Bulger's fearsome Irish Mafia, to today's Mexican cartels who are bringing their violent operations onto American soil, and the Cyber Mafia-online gangsters who can steal your money and identity.

Could gold be the ultimate link between humans and aliens? A church in southern France is said to hold the key to alchemy - is it also a gateway to another part of the universe?

It's early morning in Saqqara and Zahi is getting ready to open two sealed tombs for the first time in thousands of years, but Zoe is late again and his patience is wearing thin.

The body of a South American mummy has a number of visible wounds, and a large hole in his skull. The team work to find out: was the man a victim of crime?

Ross tries to find out more about his sea-faring Great Grandfather, Arthur Pop Chalmers. He discovers that Pop served in the Merchant Navy and survived three shipwrecks. Inspired to know more, he links up with maritime archaeologist, Mallory Haas.

A new investigation into the true fate of the Knights Templar is launched. Did the order really fall in 1307? Or did the powerful Knights continue on in secret? The team begins their investigation in Jerusalem, the epicentre of the Templar's power.