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Revenant Skeleton, Spy Cam, Shakespearean Mangle: Why is a skeleton found with a blade across its stomach, a stone on its neck and a strange green colour in its mouth? (S3, ep 6) 7+.

Turin Shroud, Rocket Belt, Scynthian Cups: Is the shroud of Turin the burial cloth of the Christian messiah or an elaborate fake? And why is it so hard to reach the truth? (S3, ep 5) 7+.

Uncover the secrets behind monuments that reveal ancient ambition, engineering brilliance and stories of power and war. (S1, ep 3) 7+.

At Toronto Pearson International Airport, the sub-zero temperatures push the de-icing station to its limits, as snow and freezing ice delays take offs. (1 of 10) 7+.

Fire crews race to a plane with faulty brakes, cargo vanishes and passengers refuse to check bags. (2 of 10) 7+.

A flight carrying 80 passengers and crew crashes on landing. As the airport goes into an immediate stop, the teams on the ground are pushed to their limit. (3 of 10) 7+.

Car SOS tackles a 2002 Suzuki Jimny, gifted to retired NHS nurse Joanna by her late father. A cherished 4x4, filled with memories, gets new life. (S13, 9 of 10) 7+.

Tim and Fuzz head to Berkshire where they hope to surprise the loving owner of a Daimler Dart by secretly restoring his classic sports car. (S2, ep 6) 7+.

Tunnels are engineering marvels, cutting through the landscape and creating direct routes - until they cave in. Plus, a bridge suddenly collapses in Miami. (S1, ep 5) 7+.

Following the 2019 fire that almost destroyed Paris's iconic Notre Dame Cathedral, a team of experts set out to restore this historic landmark. (1 of 2) 7+.

Five years after the fire, get exclusive access to Notre Dame's one billion restoration, now entering its final stages. (2 of 2) 7+.

Global discoveries rewrite history: Dracula's tomb in Italy? A survival cave in Israel, Malta's sonic labyrinth and Africa's oldest burial.

Explore the power and peril of nuclear energy, from zero-carbon grids to the disasters that reshaped safety at Chernobyl, Fukushima and TMI. (S1, ep 6) 7+.

Cutting-edge visuals drain the water around Alcatraz to reveal why the prison was so inescapable and find out what the bay's fault lines could mean for San Francisco's future. 7+.

En route from Barcelona to Dusseldorf, Germanwings Flight 9525 is flying to the French Alps when an air traffic controller spots something wrong. (S15, ep 7) 7+.

In 2005 a passenger jet crashed into the Mediterranean Sea. Follow the consequent criminal investigation which resulted in 9 men being charged with negligence. 7+.