Without a Trace

Antiques Roadshow is a British television show in which antiques appraisers travel to various regions of the United Kingdom to appraise antiques brought in by local people. It has been running since 1979. There are also international versions of the programme.

Reenactments of alien encounters.

A chilling series in which survivors of a paranormal experience relive their harrowing encounter.

Experts review prophecies about the Mayan calender and the significance of December 21, 2012.

Over the past four and a half decades, the so-called D.B. Cooper skyjacking case has captivated countless armchair detectives - not to mention teams of FBI investigators - hoping to finally crack the nation's only unsolved act of air piracy. Now a California man, who has assembled a team of investigators, thinks he may have finally solved case, which will be detailed in the two-part History Channel special D.B. Cooper: Case Closed? that airs on Sunday and Monday.

A recently unearthed repository of materials formerly classified by the secret government....The Phenomenon Archives. This series covers the taboo subjects which have had light shed on them by pouring over the materials in this repository.

Mysterious events, compelling figures, and great unanswered questions from the past are explored in this National Geographic series.

American serial killer H.H. Holmes has a dark legacy. Now, through his grandson's research, it may be that Holmes and Jack the Ripper are one in the same.

These are some of the most spectacular examples of abandoned engineering the world has ever known. The series explores how and why they were built, consider the financial and social costs of their failure and examine the environmental and ecological impacts. The series also explores how experts came up with plans to make something beautiful or useful from the ruins.

Real cases of perplexing disappearances, shocking murders and paranormal encounters fuel this gripping revival of the iconic documentary series.

Don Wildman unearths relics from the world's greatest institutions to reveal secrets from the past. He examines each artifact to illuminate history's most incredible triumphs, sensational crimes and bizarre encounters.

North America's outdoor country represents an expanse of virtually unexplored wilderness, making it a hotbed for mysteries and the unexplained. There have been hundreds of true tales reported by people every year. Now through eyewitness accounts and key facts, the hidden stories of these beautiful locales are revealed.

Don’t be scared of the rickety rollercoaster or the haunted house. It’s not the rides that will kill you. It’s the people. KILLER CARNIES unravels stories of violent crime with mysterious ties to carnivals, town fairs or arcades – deceptively cheery places perfectly poised for spine-chilling horror. Each case reveals the crime scenes behind the bright lights where detectives must piece together the truth, encountering suspicious drifters and family members left devastated by tragedy. How did the epitome of American fun descend into something so deadly? In KILLER CARNIES, it becomes clear that it’s not always fun at the fair

Tori Herridge and a team of scientists piece together life stories behind unearthed bones

Our planet’s lakes make up a huge freshwater reserve delicately balanced between the water that feeds them and the rivers they feed.

Inspired by the iconic 1970s’ franchise, this series examines unexplained phenomena from all over the world.