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The Triangle Mystery (S2, E2) | Unidentified: Inside America's UFO Investigation | Full Episode

2025-06-29 Entertainment
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HISTORY
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Description

Former intelligence officer Chris Mellon spearheads an investigation into one of the UFO phenomenon's great mysteries. Giant triangles allegedly capable of incredible acceleration and speeds have been seen all over the world. See more in Season 2, Episode 2, "The Triangle Mystery." #Unidentified Subscribe for more from Unidentified and other great The HISTORY Channel shows: http://histv.co/SubscribeHistoryYT Find out more about the show and watch full episodes on our site: https://www.history.com/shows/unidentified-inside-americas-ufo-investigation Check out exclusive The HISTORY Channel content: History Newsletter - https://histv.co/newsletter Website - https://histv.co/History Facebook - https://histv.co/Facebook Twitter - https://histv.co/Twitter In season two, each episode will center around a specific case or aspect of the modern UAP phenomenon and follow the credible team of connected investigators including former military intelligence official and Special Agent In-Charge, Luis Elizondo, and former Deputy Assistant Secretary of Defense and Intelligence, Chris Mellon. The HISTORY® Channel, a division of A+E Networks, is the premier destination for historical storytelling. From best-in-class documentary events, to a signature slate of industry leading nonfiction series and premium fact-based scripted programming, The HISTORY® Channel serves as the most trustworthy source of informational entertainment in media. The HISTORY® channel has been named the #1 U.S. TV network in buzz for seven consecutive years by YouGov BrandIndex, and a top favorite TV network by Beta Research Corporation. For a deeper dive, visit history.com or follow @history on Instagram, Twitter, Facebook, YouTube and TikTok. For additional press materials visit the A+E Networks Press Center at http://press.aenetworks.com.

Top Comments (10)

@freiagalacar5786 2025-08-15

I've literally seen one of these. It was after the electricity went out. I went to the backyard and it was hovering slowly over my parents house. It was triangle shaped with three glowing red lights, and surprisingly low/close to the ground. It was amazing. I wasn't scared, I was just fascinated. My first thought was it was extraterrestrial, but it also could of been advanced government technology. When I went inside I told my dad and he said he thought it was probably a helicopter. I tried to explain but I didn't want to appear crazy so I dropped it. Another weird thing that happened, when the electricity went out the sky lit up briefly in a bright fluorescent neon blue color, it was 2 or 3 flashes of light and it illuminated the whole sky within vision. It was the coolest thing I've ever seen. Witnessing the sky like that was more amazing than seeing the aircraft. It was otherworldly, almost like a portal opening up. It didn't look like it was coming from a single source, it filled the entire sky. We saw it when we were driving back to my parents house with my mom and her friend. The weird thing is it wasn't raining and there was no thunder that day. 100% true story.

130 44 replies
@j.jmcquade5278 2025-10-30

I always love when someone discounts what others saw when they weren't even there. People need to have an explanation that makes sense to their narrow closed mind to ease to make themselves feel better

68 10 replies
@choktawgypsy4644 2025-12-11

I am a nurse who was working midnights and myself and 2 other nurses that are military nurses and a psychologists all on lunch break outside on a summers night all saw two huge black triangles that were outlined with very bright stars it looked like. It sat hovering than at one smooth movement with no sound both started spinning and moving across the sky together! We all saw it and had no words we just stood there amazed at the silence, no crickets nothing the crafts were silent and the world around us became silent! I will never forget this!

39 14 replies
@RebeccaPeterson-r7e 2025-06-29

FYI To The Stars in Encinitas, CA. I knew Robert Nathan at JPL in Pasadena. He came to my house to interview me in 1968 after my UFO experience in the Joshua Tree desert.

35 2 replies
@MeanMarine2147 2025-06-29

My Father worked for Hamilton Standard/Pratt Whitney, He told Me that He was an aircraft part inspector and would be given blueprints to inspect with no aircraft name or Identifying information.

20
@Eastern-Stories 2025-06-30

So we’ve got flying Doritos that can go from 0 to warp speed in silence? NASA owes us answers AND a snack.

12 4 replies
@clarkabrpi3428 2025-10-31

It's my first time seeing this show. The sighting over Illinois by Ofc. Ed Barton and the other officers from those other towns is personal to me. Ed worked with me and was working my shift the night he was dispatched to the sighting, while I was on vacation in Gulf Shores Alabama with my family. The additional info the shows producers don't know, is that there were plenty of other officers from surrounding departments that have never come forward to report what they saw for a number of reasons.

11
@gtx.kev.p90 2025-11-27

I've seen the triangle. It was hovering over some trees next to the highway I was traveling on. It was about 30 ft off the ground and as big as a city block No noise. 2017

7
@GreyGhost-r4z 2025-12-15

I experienced a Black Triangle while living just North of Plattsburgh, NY in 1994. This started my journey into multiple UFO encounters over the last 31 years. I was within 100 feet of a black triangle. Zero Sound. Feeling of DREAD. I still have PTSD from the encounter. It has affected me deeply. I have had 6+ encounters.

6
@ElizabethHernandez-cs8wi 2025-12-12

I saw one of these as well. I was driving home while pregnant with my first child, with my mother in the car, when suddenly three lights appeared in my windshield, emerging from behind the car and moving overhead. As a lifelong UFO enthusiast, I immediately knew what I was seeing was not a helicopter, airplane, or drone. It was flying very low—about the height of an emergency response helicopter—but it was completely silent, moving effortlessly with no visible signs of propulsion, exhaust, or contrails. It almost seemed to float. I pulled over to the side of the road to get a better look, opened the car door, and stepped out to look up. To my surprise, the object stopped directly above the car. I watched it for several seconds in awe—both because I couldn’t believe what I was seeing and because I had the distinct feeling that I was being watched in return. There was a brief, unsettling sense of connection, and once that realization set in, fear took over. I quickly got back into the car and drove away. The craft was triangular and black, nearly the same color as the night sky, with one large, self-contained light at each corner.

3

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