This baffling true crime story starts with the grisly death of a pizza man who robs a bank with a bomb around his neck and gets weirder from there.
A surgeon claims to remove high tech microchips that aliens used to manipulate the human race. This documentary seeks to separate fact from fiction.
Investigative journalists tackle complex and under-reported subjects ranging from online extortion to fentanyl addiction and partisan gerrymandering.
Follow Todd Standing, Dr. Jeff Meldrum and other researchers into the wilderness, where they try to capture definitive proof of Sasquatch's existence.
Mexican journalist and ufologist Jaime Maussan travels the world collecting evidence and firsthand accounts of extraterrestrial phenomena.
In this groundbreaking series, ex-SAS soldiers reveal the truth about life in one of the world's most secretive and feared military units.
Two former prosecutors travel throughout the U.S., searching for new clues and witnesses to crack long-unsolved cases involving sexual assault.
This documentary reveals the truth about an NSA cryptologist whose innovative surveillance program was eliminated just weeks before the 9/11 attacks.
Compelling new evidence drives this examination of the drug kingpin's death, including possible involvement of the Colombian and U.S. governments.
This intense documentary follows real cases of American girls enslaved in the child sex trade through ads in a newspaper's online classified section.
Although there is some evidence that Adolf Hitler ordered its development, the question remains: Were the Nazis close to having an atomic bomb?
From animal oddities and bizarre science to medical marvels, scientists and experts examine some of the world's strangest mysteries and phenomena.
UFO sightings have been on the rise since the 1940s, with thousands reported every year but is alien existence all a figment of our imagination?
Uncover fascinating new information about the 'lost' underwater city of Atlantis, a legend that has long mystified scholars and explorers.
This series investigates mysteries that persistently elude scientific explanation, such as mythical creatures, UFOs, sacred sites and more.
For two years, dozens of New Delhi children have gone missing. When police finally crack the case, two men are convicted, but details don't add up.
Filmmaker Justin Gaar probes the odd but intriguing mind of longtime UFO videographer Christo Roppolo and shares footage from his many UFO sightings.
For 13 years, the underground neo-Nazi organization NSU eluded German police while planting bombs, robbing banks and killing immigrants at random.
An attorney acting as "devil's advocate" interviews those who claim to share a personal relationship or mystical experiences with the Virgin Mary.
Declassified FBI documents trace an 11-year investigation of rumors that Hitler survived Germany's defeat in 1945, escaping via U-boat to Argentina.
Skeptics and others discuss widely held conspiracy theories involving aliens, government cover-ups, secret assassinations and other intrigues.
In 2000, U.K. detectives spent months tracking a criminal known only as Sally, who was targeting a supermarket chain with extortion and letter bombs.
Determined to bring the man responsible for their daughter's murder to justice, a Southampton couple embarks on a grueling five-year crusade.
In an attempted heist worthy of a Hollywood film, a cadre of criminals sets out to steal the world's largest perfect diamond from a London landmark.
When a special constable is stabbed to death outside her house, a botched robbery is suspected until police uncover shocking clues closer to home.
Wildlife cameraman John Waters travels to the forests of the Pacific Northwest in search of the elusive cryptozoological specimen known as Bigfoot.
Host Chris Packham examines bizarre natural phenomena from around the globe, from strange creatures to geographical oddities.
From fingerprint analysts to computer experts to dentists, forensic specialists help authorities track down criminals with the tiniest clues.
This spellbinding documentary hosted by actor Jonathan Frakes deigns to go where few have gone before: to Roswell, New Mexico, to investigate so-ca...
Skeptics and experts discuss photographs and other evidence that suggest the United States government faked NASA's moon landings for political gain.
How was the scientific understanding of the ancients so advanced? A team of experts answers this and other questions in this fascinating series.
This documentary chronicles the true story of a French fashion student who discovered via the Internet an identical twin she never knew existed.
Discover the glorious variety of life on Earth and the spectacular and extraordinary tactics animals and plants have developed to stay alive.