At the height of the Cold War, US subs gathered secrets that neither spies nor satellites could expose. Until recently, almost nobody knew the hidden history of their tragedies and triumphs. As the US strove for supremacy in the Cold War, it pushed submarine technology to its limits. Breakthroughs led to unparalleled triumphs of espionage. And, missteps cost hundreds their lives. With recently declassified film, NOVA lifts the veil on tragic and mysterious submarine accidents and their high-risk spy missions that helped win the Cold War. Along with celebrated oceanographer and explorer, Robert Ballard (discoverer of the Titanic), NOVA goes in search of clues to two tragedies of the Cold War, the wrecks of the nuclear submarines Thresher and Scorpion. Recently declassified footage gives a unique glimpse of the wrecks and a chance to investigate the catastrophic accidents that overtook these subs and their crew.

NOVA Season 26 Episodes...

• s26e01 - Lost At Sea: The Search For Longitude
• s26e02 - Chasing El Niño
• s26e03 - Terror In Space
• s26e04 - Special Effects: Titanic and Beyond
• s26e05 - Deadly Shadow of Vesuvius
• s26e06 - Ice Mummies (1): Frozen In Heaven
• s26e07 - Ice Mummies (2): Siberian Ice Maiden
• s26e08 - Ice Mummies (3): Return of the Iceman
• s26e09 - Leopards of the Night with David Attenborough
• s26e10 - The Perfect Pearl
• s26e11 - The Beast of Loch Ness
• s26e12 - Submarines, Secrets & Spies
• s26e13 - Surviving AIDS
• s26e14 - Escape! Because Accidents Happen: Fire (1)
• s26e15 - Escape! Because Accidents Happen: Car Crash (2)
• s26e16 - Escape! Because Accidents Happen: Plane Crash (3)
• s26e17 - Escape! Because Accidents Happen: Abandon Ship (4)
• s26e18 - Battle Alert in the Gulf
• s26e19 - Volcanoes of the Deep
• s26e20 - To the Moon

NOVA Show Summary

Seen in more than 100 countries, NOVA is the most watched science based television series in the world and the most watched documentary series on PBS. It is also one of television's most acclaimed series, having won many major television awards, most of them many times over.