Travel Channel

'S1/E2 - It Knows We're Here'. The team are left unsettled as they discover evidence of Nantinaq's hunting habits. Keith and Ash visit a historian, who fills them in on the town's bloody past.

'S2/E5 - Time's Running Out'. With just three days left in the Kentucky expedition, the team investigates a strange tree structure that could be key to proving the existence of Bigfoot.

'S2/E6 - Bigfoot's Lair?'. It's the final days of the Kentucky expedition and the team explores a cave that could be Bigfoot's underground lair. Could it be their most important discovery yet?

'S3/E11 - The Sun's Evil Twin'. Witnesses photograph two suns in the sky over Indonesia - is this the first sighting of the Sun's dark twin that could spell imminent danger to Earth?

'S3/E12 - Secret Aliens'. Geologists discover alien deposits on the Earth's surface - and the answer could shed light on the cause of the greatest extinction in its history.

'S3/E11 - Carter's UFO And Stardust'. Don Wildman recounts a US president's close encounter with a UFO. Plus, he reveals the truth behind bizarre lines etched into the desert floor.

'S3/E12 - Witch Is Back And Swamp Ghost'. Don Wildman recounts the terrifying return of the Bell Witch. Plus, he reveals the story behind a series of giant figures carved into a barren desert.

'S1/E7 - Arizona Anomalies'. A recent UFO sighting in Phoenix leads Chuck and the team to Sedona, AZ. They explore whether the area's energy vortexes act as portals for otherworldly visitors.

'S1/E8 - Escape From Area 51'. After an informant tells of an alien that reportedly escaped from Area 51, Chuck and the team go to Tonopah, NV, to investigate whether it still roams the area.

'S2/E7 - UFOs Of The Triangle'. The Alaskan skies are filled with unexplainable lights and objects. Witness accounts and never-before-seen evidence suggest UFOs are landing in the area.

'S2/E8 - Aggressive Bigfoot'. Hostile Sasquatches are said to be leaving the wilderness behind for Alaska's major cities. Plus, ghost hunters search for evidence at an infamous hotel.

'S1/E3 - Monster In The Abyss'. Experts investigate the disappearance of people who have gone missing while swimming in the Triangle. Some locals believe a sea monster is responsible.

'S1/E4 - US Navy Vs The Triangle'. New discoveries might finally explain the truth behind one of the Triangle's most infamous mysteries, when 306 US Navy crewmen vanished without a trace.

'S2/E10 - The Real Beauty And The Beast'. A French chateau hosts one of the most beloved romances ever told. A Scottish castle is the setting for a scientist's daring experiment.

'S2/E11 - Dickens Affair'. A stunning French chateau plays host to the illicit affair of a literary superstar. Plus, an Irish manor is at the centre of an art heist.

'S13/E2 - Cupid's Bullet, the Man Who Fooled Houdini and Snail Telegraph'. Don Wildman examines a war-time surgery, a magician that challenged Harry Houdini and the race for wireless communication that lead to a slimy invention.

'S2/E20 - Tortured Soul Asylum'. The team continue their investigation of Pennsylvania's Harrisburg State Hospital. They examine its sordid past to understand the intense paranormal activity.

'S1/E4 - Bisbee, AZ'. The team head to Bisbee, Arizona to investigate the one-time mining town's rough past. And, they head underground for the first time in their paranormal careers.

'S1/E8 - The Mill Street Barracks'. Nick and Katrina pursue a negative presence in the haunted Mill Street Barracks. During their investigation, they are followed by an unexpected entity.

'S2/E15 - Brushy Mountain State Penitentiary'. Back in Tennessee, the boys investigate a legendarily brutal prison every southerner feared - the Brushy Mountain State Penitentiary.

'S5/E3 - Tooele Hospital'. Ghost hunters Zak Bagans, Nick Groff and Aaron Goodwin visit a hospital in Utah, the site of a number of reported unexplained hauntings.