Extras
An intimate portrayal of three families confronting the unique challenges of Alzheimer’s.
Gavin Svenson heads to the Brazilian rainforest to sample the diversity of mantises.
Nancy’s wedding plans take a surprising turn. Sister Catherine takes her First Vows.
Forensic science is put to the test after the first-ever staged multi-vehicle pileup.
An elusive photographer uses street art tactics to share his previously unknown work with the world.
Jesse Barber and Akito Kawahara study the evolutionary arms race between bats and moths.
Monarch butterflies winter in the fir forests of Michoacan, Mexico, after an epic migration.
Joyce faces a disciplinary hearing over a recent complaint which has been upheld.
A first-of-its-kind experiment aims to stage a multi-vehicle pileup to gain new data on car safety.
A four-part investigation into insect declines, exploring their diversity and ecological importance.
Latest Episodes
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All
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Secrets of the Dead Season 22
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Secrets of the Dead Season 21
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Secrets of the Dead Season 20
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Secrets of the Dead Season 19
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Secrets of the Dead Season 18
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Secrets of the Dead Season 17
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Secrets of the Dead Season 16
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Secrets of the Dead Season 15
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Secrets of the Dead Season 14
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Secrets of the Dead Season 13
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Secrets of the Dead Season 12
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Secrets of the Dead Season 11
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Secrets of the Dead Season 10
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Secrets of the Dead Season 9
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Secrets of the Dead Season 8
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Secrets of the Dead Season 7
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Secrets of the Dead Season 6
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Secrets of the Dead Season 5
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Secrets of the Dead Season 4
Historian Jonathan Petropoulos investigates the post-war life of former Nazi art dealer Bruno Lohse.
Historian Jonathan Petropoulos investigates the life of former Nazi art dealer Bruno Lohse.
Priceless artifacts in Laos reveal holy sites from the early days of the Khmer Empire.
The discovery of priceless artifacts in Laos sheds light on the ancient Khmer Empire.
Uncover the mystery behind the discovery of more than 50 "vampire" burials.
A search for the remains of Black Union soldiers murdered toward the end of the Civil War.
Scientists attempt to read ancient scrolls carbonized by the eruption of Mt. Vesuvius.
Learn the untold story of Maria Anna Mozart, Wolfgang’s older sister and collaborator.
Archaeologists search for Assyrian artifacts that survived the Isis occupation of Mosul.
Find out if the 15th-century murder of two princes in the Tower of London can be solved.