| Title of Article | Content Type |
|---|
| "I AM" Activity | Occult |
| 1952 Washington, D.C. UFO incident | UFO |
| 1958 Tybee Island mid-air collision | History |
| 1961 Goldsboro B-52 crash | History |
| 1984 New York City Subway shooting | Crime |
| 1991 Austin yogurt shop murders | Murder |
| 2002 Überlingen mid-air collision | Murder |
| 2006 O'Hare International Airport UFO sighting | UFO |
| 2007 Carancas impact event | History |
| 2009 Plymouth child abuse case | Crime |
| 2009 Taconic State Parkway crash | Crime |
| 2011 Norway attacks | History |
| 2012 Delhi gang rape and murder | Funny |
| 2020 Nova Scotia attacks | History |
| Abbey of Thelema | Occult |
| Abraham Ulrikab | History |
| Abu Ghraib torture and prisoner abuse | History |
| Actun Tunichil Muknal | History |
| Adam | Murder |
| ADX Florence | General |
| Aimee Challenor | Occult |
| Albert Fish | Serial killer |
| Aleister Crowley | Occult |
| Alessandro Cagliostro | Occult |
| Aleister Crowley | Occult |
| Alferd Packer | General |
| All You Zombies | History |
| Allagash abductions | UFO |
| Alvarez case | Typical White Man Behavior |
| Alyoshenka | General |
| Amelia Dyer | Serial killer |
| Amelia Earhart | Disappearance |
| Amy Archer-Gilligan | Serial killer |
| Andrei Chikatilo | Serial killer |
| Anatoly Moskvin | Crime |
| Anatoly Slivko | Serial killer |
| Anna | General |
| Anomalistics | Paranormal |
| Aokigahara | Suicide |
| Apocalypse | General |
| Apophenia | General |
| Apparitional experience | Paranormal |
| Area 51 | UFO |
| Arecibo message | History |
| Ariel Castro | Serial killer |
| Armin Meiwes | History |
| Art Bell | General |
| Ascended master | Occult |
| Asch conformity experiments | Science |
| Astral projection | Paranormal |
| Atlas Vampire | Murder |
| Atuk | General |
| Aum Shinrikyo | General |
| Aurora, Texas, UFO incident | UFO |
| Avatamsaka Sutra | General |
| Axeman of New Orleans | Serial killer |
| Baba Anujka | Serial killer |
| Baleroy Mansion | Paranormal |
| Bannack, Montana | Ghost town |
| Baphomet | General |
| Barbara Daly Baekeland | Incest |
| Bath School disaster | History |
| Beaumont children disappearance | Disappearance |
| Beelzebub | Occult |
| Béla Kiss | Serial killer |
| Bennington Triangle | Paranormal |
| Bermuda Triangle | Paranormal |
| Bimini Road | General |
| Black dog | Paranormal |
| Black helicopter | Conspiracy |
| Black Mass | Occult |
| Black operation and Black project | Conspiracy |
| Black Paintings | History |
| Blanche Monnier | Funny |
| Bloop | Paranormal |
| Boleskine House | Occult |
| Bon Secours Mother and Baby Home | History |
| Bonanno crime family | Crime |
| Book of Soyga | Occult |
| Borley Rectory | Paranormal |
| Boston Strangler | Serial killer |
| Boy in the Box | Paranormal |
| Bradford Bishop | Disappearance |
| Brainwashing | General |
| Buffalo crime family | Crime |
| Burke and Hare murders | Murder |
| Butterfly effect | Science |
| Calico, California | Ghost town |
| Cambodian jungle girl | General |
| Cameron Todd Willingham | Innocent? |
| Candace Newmaker | General |
| Captain Midnight broadcast signal intrusion | Paranormal |
| Carl Eugene Watts | Serial killer |
| Carl McCunn | General |
| Carl Panzram | Serial killer |
| Carl Tanzler | History |
| Carol M. Bundy | Serial killer |
| Carroll A. Deering | General |
| Carrollton bus collision | Crime |
| Carson Sink UFO incident | UFO |
| Cary Stayner | Serial killer |
| Cash-Landrum incident | UFO |
| Cattle mutilation | UFO |
| Centralia, Pennsylvania and mine fire | Ghost town |
| Chaos theory | Science |
| Chappaquiddick incident | Crime |
| Charles Cullen | Serial killer |
| Charles Fort | Occult |
| Charles Manson | Serial killer |
| Charles Ng | Serial killer |
| Charles Starkweather | Serial killer |
| Charles Whitman | Serial killer |
| Chelsea Manning | History |
| Chemtrail conspiracy theory | Conspiracy |
| Chernobyl disaster | History |
| Chicago Outfit | Crime |
| Chicago Tylenol murders | Murder |
| Child cannibalism | General |
| Chris Benoit double-murder and suicide | Murder |
| Christine Chubbuck | Suicide |
| Christopher Dorner shootings and manhunt | Murder |
| Chronology of the universe | Science |
| Cicada 3301 | General |
| Clairvoyance | Paranormal |
| Clapham Wood | Paranormal |
| Cleveland Torso Murderer | Serial killer |
| Clinical lycanthropy | Psychology |
| Clock of the Long Now | Science |
| Coffin birth | General |
| COINTELPRO | Conspiracy |
| Colfax massacre | White People |
| Collective unconscious | Psychology |
| Colonial Parkway murders | Murder |
| Colt clan incest case | Incest |
| Consensus reality | General |
| Count of St. Germain | History |
| Crawford family murder | Murder |
| Crooked Forest | General |
| Crush, Texas | History |
| Curse tablet | History |
| Cyrus Teed | Occult |
| D. B. Cooper | Disappearance |
| Danny Casolaro | Disappearance |
| Danny Rolling | Serial killer |
| Dardeen family homicides | Murder |
| David Berkowitz | Serial killer |
| David Koresh | Occult |
| David McGreavy | Serial killer |
| David Parker Ray | Serial killer |
| David Reimer | General |
| Dean Corll | Serial killer |
| Death | General |
| "Death of..." |
| Brandon Vedas | General |
| Brian Douglas Wells | General |
| Caylee Anthony | Murder |
| Darren Rainey | Murder |
| Edgar Allen Poe | History |
| Elisa Lam | Disappearance |
| Gareth Williams | Conspiracy |
| Gloria Ramirez | Paranormal |
| James Dean | History |
| Jeffrey Baldwin | Murder |
| JonBenét Ramsey | Murder |
| Kelly Thomas | Murder |
| Kris Kremers and Lisanne Froon | Disappearance |
| Decompression sickness | General |
| Deep history and Deep time | Science |
| Delirium tremens | General |
| Delphine LaLaurie | Serial killer |
| Demon core | History |
| Demonic possession | Paranormal |
| Dendera light | History |
| Dennis Nilsen | Serial killer |
| Dennis Rader | Serial killer |
| Depressive realism | General |
| Devil | Paranormal |
| Dionysian Mysteries | History |
| Dirac sea | Science |
| "Disappearance of..." |
| Amy Lynn Bradley | Disappearance |
| Ann Marie Burr | Disappearance |
| Asha Degree | Disappearance |
| Ayla Reynolds | Disappearance |
| Ben McDaniel | Disappearance |
| Bethany Decker | Disappearance |
| Bobby Dunbar | Disappearance |
| Brandon Swanson | Disappearance |
| Brian Shaffer | Disappearance |
| Brianna Maitland | Disappearance |
| Corrie McKeague | Disappearance |
| Dennis Martin | Disappearance |
| Frederick Valentich | Disappearance |
| Gary Mathias | Disappearance |
| Jamie Fraley | Disappearance |
| Jennifer Kesse | Disappearance |
| Jessica Heeringa | Disappearance |
| Kyron Horman | Disappearance |
| Lauren Spierer | Disappearance |
| Madeleine McCann | Disappearance |
| Margaret Ellen Fox | Disappearance |
| Maura Murray | Disappearance |
| Natalee Holloway | Disappearance |
| Sneha Anne Philip | Disappearance |
| Susan Powell | Disappearance |
| Tammy Kingery | Disappearance |
| Tara Calico | Disappearance |
| Terrance Williams and Felipe Santos | Disappearance |
| Tiffany Daniels | Disappearance |
| Timmothy Pitzen | Disappearance |
| Tom and Eileen Lonergan | Disappearance |
| Yingying Zhang | Disappearance |
| Zebb Quinn | Disappearance |
| Dixon Bridge Disaster | History |
| Dnepropetrovsk maniacs | Serial killer |
| Donald Harvey | Serial killer |
| Donald Henry Gaskins | Serial killer |
| Donner Party | General |
| Doodler | Serial killer |
| Doomsday Clock | Science |
| Duga radar | Numbers station |
| Dulce Base | UFO |
| Dupont de Ligonnès murders and disappearance | Disappearance |
| Dyatlov Pass incident | Disappearance |
| Eastern State Penitentiary | General |
| Eben Byers | General |
| ECHELON | Conspiracy |
| Ed Gein | Serial killer |
| Eddie Slovik | History |
| Edgar Cayce | Occult |
| Edmund Kemper | Serial killer |
| Edward Snowden | History |
| Effects of nuclear explosions on human health | Science |
| Eiserner Mann | General |
| Élan School | Crime |
| Electronic voice phenomenon | General |
| Elijah Muhammad | General |
| Eliza Armstrong case | History |
| Elizabeth Báthory | Serial killer |
| Elohim City, Oklahoma | Paranormal |
| Elugelab | History |
| Enhanced interrogation techniques | Conspiracy |
| Eschatology | Science |
| Eternal return | Science |
| Euthanasia Coaster | General |
| Eva Dugan | History |
| Evil demon | General |
| Expanding Earth | General |
| Extraordinary rendition | Conspiracy |
| Extrasensory perception | Paranormal |
| Fake kidnapping | General |
| False memory syndrome | General |
| Familicide | General |
| Family International | Occult |
| Fantastic Adventures scandal | Crime |
| Fearsome critters | General |
| Felix Moncla | Disappearance |
| Fibrodysplasia ossificans progressiva | Disease |
| Five Families | Crime |
| Flag Building | Occult |
| Forbidden City | General |
| Forced disappearance | General |
| Franklin Delano Floyd | Murder |
| Fred West | Incest |
| Fritzl case | Incest |
| Frog Boys | Crime |
| Fukushima Daiichi nuclear disaster | History |
| Future of an expanding universe | Science |
| Future of the Earth | Science |
| Gary Ridgway | Serial killer |
| Genie | History |
| Georgia Tann | History |
| Gilles de Rais | History |
| Global catastrophic risk | General |
| Global Consciousness Project | Conspiracy |
| Global surveillance disclosures (1970-2013) | Conspiracy |
| Global surveillance disclosures (2013-present) | Conspiracy |
| Goiânia accident | History |
| Golden State Killer | Serial killer |
| Goldfield, Nevada | Ghost town |
| Gordon Stewart Northcott | Serial killer |
| Great Blue Hole | General |
| Greenbrier Ghost | History |
| Green children of Woolpit | History |
| Grigori Rasputin | History |
| Grim Sleeper | Serial killer |
| H. H. Holmes | Serial killer |
| Hammersmith nude murders | Murder |
| Head transplant | General |
| Heartbeat in the Brain | General |
| Heaven's Gate | Occult |
| Height 611 UFO incident | UFO |
| Helena Blavatsky | Occult |
| Hello Kitty murder | Murder |
| Helter Skelter | Occult |
| Henry Lee Lucas | Serial killer |
| Hi-Fi murders | Murder |
| High Frequency Active Auroral Research Program | General |
| Highway of Tears | Murder |
| Hinterkaifeck murders | Murder |
| Holodomor | History |
| House on the Rock | General |
| Human extinction | Science |
| IBM 7950 Harvest | Science |
| Immanuel Velikovsky | Science |
| Impact event | Science |
| Indigo children | Paranormal |
| Infrasound | Science |
| Integration | Science |
| Isdal Woman | Murder |
| Israel Keyes | Serial killer |
| Issei Sagawa | Murder |
| J. Edgar Hoover | History |
| Jack Parsons | Occult |
| Jack the Ripper | Serial killer |
| Jack Unterweger | Serial killer |
| Jackie Arklöv | Crime |
| Jacob Wetterling | Disappearance |
| James C. Burt | Crime |
| James Dallas Egbert III | Suicide |
| Jeff Davis 8 | Murder |
| Jeffrey Dahmer | Serial killer |
| Jeffrey R. MacDonald | Murder |
| Jennifer Pan | Murder |
| Jerome of Sandy Cove | Paranormal |
| Jerry Brudos | Serial killer |
| Jewish Question | History |
| Jim Jones | Suicide |
| Jodi Huisentruit | Disappearance |
| Joel Rifkin | Serial killer |
| Johnny Gosch | Disappearance |
| John Fare | Paranormal |
| John Gotti | Crime |
| John List | Serial killer |
| John Murray Spear | Occult |
| John Roselli | History |
| John Wayne Gacy | Serial killer |
| Jonathan Simms | General |
| Jonestown | Suicide |
| Joseph Vacher | Serial killer |
| Joyce Vincent | Disappearance |
| June and Jennifer Gibbons | General |
| Kalinka Bamberski case | Crime |
| Karl Denke | Serial killer |
| Kaoru Kobayashi | Murder |
| Karen Greenlee | Paranormal |
| Kaspar Hauser | History |
| Katherine Knight | Murder |
| Kecksburg UFO incident | UFO |
| Keddie murders | Murder |
| Keith Hunter Jesperson | Serial killer |
| Kenneth Bianchi | Serial killer |
| Kenneth McDuff | Serial killer |
| Kenneth Parnell | Serial killer |
| Kent State shootings | Murder |
| "Kidnapping of..." |
| Carlina White | Disappearance |
| Colleen Stan | Disappearance |
| Elizabeth Smart | Disappearance |
| Jaycee Dugard | Disappearance |
| Jayme Closs | Disappearance |
| Shannon Matthews | Disappearance |
| Kidwelly sex cult | Occult |
| Killing of Henryk Siwiak | Murder |
| Killing of Tim McLean | Murder |
| Kobe child murders | Murder |
| Kola Superdeep Borehole | General |
| Kowloon Walled City | General |
| Kuchisake-onna | General |
| Lake Bodom murders | Murder |
| Lake Nyos disaster | General |
| Large Hadron Collider | Science |
| Larry Eyler | Serial killer |
| Lavrentiy Beria | History |
| Lawrence Bittaker | Serial killer |
| Lawrence Singleton | Serial killer |
| Lead Masks Case | History |
| Lemp Mansion | Suicide |
| Leonard Lake | Serial killer |
| Leopold and Loeb | Murder |
| Lincolnshire Poacher | Numbers station |
| Lingchi | History |
| Linz sisters | Crime |
| List of child abuse cases featuring long-term detention | List |
| List of expulsions of African Americans | List |
| List of fugitives from justice who disappeared | List |
| List of kidnappings | List |
| List of mass hysteria cases | List |
| List of murdered American children | List |
| List of people who disappeared mysteriously: pre-1970 and post-1970 | List |
| List of reported UFO sightings | List |
| List of reportedly haunted locations in the United States | List |
| List of serial killers in the United States | List |
| List of suicide sites | List |
| List of tunnels in the United States | List |
| List of unexplained sounds | List |
| List of unsolved deaths | List |
| List of unusual deaths | List |
| List of wars and anthropogenic disasters by death toll | List |
| Little Miss Nobody case | Murder |
| Liver-Eating Johnson | History |
| Lizzie Borden | Murder |
| Lizzie van Zyl | History |
| Long-time nuclear waste warning messages | History |
| Long Island serial killer | Serial killer |
| Lori Erica Ruff | General |
| Louis Wain | General |
| Lucid dream | Science |
| Lucifer | General |
| Ludlow Massacre | Murder |
| Lyle Stevik | Suicide |
| Lynching of Jesse Washington | History |
| Mackenzie Phillips | Incest |
| Mad Gasser of Mattoon | History |
| Magdalene Laundries in Ireland | History |
| Malaysia Airlines Flight 370 | Disappearance |
| Mal de debarquement | Condition |
| Manacled Mormon case | Crime |
| Manson Family | Occult |
| Marc Dutroux | Serial killer |
| Marcus Wesson | Incest |
| Mariana UFO incident | UFO |
| Marquis de Sade | History |
| Marshall Applewhite | Suicide |
| Mary Bell | Murder |
| Mary Ellen Wilson | Crime |
| Matthew Falder | Crime |
| May 1918 lynchings | Murder |
| Max Headroom broadcast signal intrusion | Paranormal |
| McKamey Manor | Crime |
| McMartin preschool trial | General |
| Mellified man | General |
| Men in black | Conspiracy |
| Michael Mallory | Murder |
| Moberly–Jourdain incident | Paranormal |
| Moe incest case | Incest |
| Monster Study | History |
| Montauk Project | Conspiracy |
| Moors murders | Murder |
| Movement for the Restoration of the Ten Commandments of God | Occult |
| Mr Cruel | Serial killer |
| Multiverse | Science |
| "Murder of..." |
| Adam Walsh | Murder |
| Amy Mihaljevic | Murder |
| Murder of Ana Kriégel | Murder |
| Cassie Jo Stoddart | Murder |
| Carol Cole | Murder |
| Channon Christian and Christopher Newsom | Murder |
| Dee Dee Blanchard | Murder |
| Dru Sjodin | Murder |
| Elyse Pahler | Murder |
| Helle Crafts | Murder |
| Holly Bobo | Murder |
| Jeannette DePalma | Murder |
| Joel and Lisa Guy | Murder |
| Jon-Niece Jones | Murder |
| Jun Lin | Murder |
| Junko Furuta | Murder |
| Karen Price | Murder |
| Karlie Pearce-Stevenson and Khandalyce Pearce | Murder |
| Kelly Anne Bates | Murder |
| Krista Harrison | Murder |
| Liam Ashley | Murder |
| Lindsay Buziak | Murder |
| Maria Laura Mainetti | Murder |
| Maria Ridulph | Murder |
| Mark Kilroy | Murder |
| Michelle Busha | Murder |
| Nixzmary Brown | Murder |
| Peter Falconio | Murder |
| Santos Rodriguez | Murder |
| Shanda Sharer | Murder |
| Skylar Neese | Murder |
| Stephanie Roper | Murder |
| Suzanne Capper | Murder |
| Sylvia Likens | Murder |
| Tammy Alexander | Murder |
| Tia Rigg | Murder |
| Tia Sharp | Murder |
| Tina Harmon | Murder |
| Wu Shuoyan | Murder |
| Myiasis | Science |
| Nanking Massacre | History |
| Nannie Doss | Serial killer |
| Natascha Kampusch | Disappearance |
| Nathaniel Bar-Jonah | Serial killer |
| Nation of Yahweh | Occult |
| Native American slave ownership | History |
| Nazi Germany | History |
| Nazi human experimentation | History |
| New World Order | Conspiracy |
| Nighttime Killers | Serial killer |
| Nikolai Dzhumagaliev | Serial killer |
| Norfolk headless body | Murder |
| Novikov self-consistency principle | Science |
| Nuclear holocaust | General |
| Numbers station | Conspiracy |
| Nuremberg Trials | History |
| Observable universe | Science |
| Olga Hepnarová | Serial killer |
| Oklahoma City bombing | General |
| Oklahoma Girl Scout murders | Murder |
| Operation Trust | History |
| Operation Whitecoat | Conspiracy |
| Operation Paperclip | History |
| Oradour-sur-Glane massacre | History |
| Order of the Solar Temple | Occult |
| Oskar Dirlewanger | History |
| Ottis Toole | Serial killer |
| Parker-Hulme murder case | Murder |
| Pascal's wager | History |
| Paul Bernardo | Serial killer |
| Peter Bergmann case | Murder |
| Peter Kürten | Serial killer |
| Peter Scully | Murder |
| Peter Sutcliffe | Serial killer |
| Phantom time hypothesis | Conspiracy |
| Philadelphia Experiment | Paranormal |
| Phillip Carl Jablonski | Serial killer |
| Pinworm infection | General |
| Piri Reis map | History |
| Pisith Pilika | Murder |
| Planets beyond Neptune | Science |
| Plastic bronchitis | General |
| Poltergeist | Paranormal |
| Polybius | Paranormal |
| Princess Doe | Murder |
| Pripyat | History |
| PRISM | Conspiracy |
| Project ARTICHOKE | Conspiracy |
| Project Blue Book | Conspiracy |
| Project MKUltra | Conspiracy |
| Propaganda Due | Conspiracy |
| Psychokinesis | Paranormal |
| PS General Slocum | History |
| Quantum suicide and immortality | Science |
| R. Budd Dwyer | Suicide |
| Raëlism | Occult |
| Randy Steven Kraft | Serial killer |
| Raymond Robinson | General |
| Remote viewing | Paranormal |
| Rendlesham Forest incident | UFO |
| Reported UFO sightings in the United Kingdom | UFO |
| Repressed memory | General |
| Rhythm 0 | History |
| Richard Chase | Serial killer |
| Richard Ramirez | Serial killer |
| Richard Sharpe Shaver | General |
| Ricky Kasso | Murder |
| Ricky McCormick's encrypted notes | Paranormal |
| Ricky Ray Rector | Crime |
| Ripper Crew | Serial killer |
| Roanoke Colony | Paranormal |
| Robert Ben Rhoades | Serial killer |
| Robert Black | Serial killer |
| Robert Lee Yates | Serial killer |
| Robert Hansen | Serial killer |
| Robert Sandifer | Crime |
| Robert William Fisher | Serial killer |
| Robsart, Saskatchewan | Ghost town |
| Rod Ferrell | Murder |
| Rodney Alcala | Serial killer |
| Rokurokubi | General |
| Roscoe Fatty Arbuckle | History |
| Rosemary Kennedy | History |
| Rosenheim Poltergeist | Paranormal |
| Rosewood massacre | History |
| Roswell UFO incident | UFO |
| Roy Norris | Serial killer |
| Ruby Ridge | History |
| Rzeszowski family homicides | Murder |
| Sacred geometry | Occult |
| Sada Abe | General |
| Salem witch trials | History |
| Salish Sea human foot discoveries | General |
| San Ysidro McDonald's massacre | History |
| Sankebetsu brown bear incident | History |
| Santa Rosa hitchhiker murders | Murder |
| Sasebo slashing | Murder |
| Saskatoon freezing deaths | General |
| Satan | General |
| Satanic ritual abuse | Occult |
| Satanism | General |
| Sawney Bean | History |
| Scaphism | General |
| Sean Sellers | Serial killer |
| Seance | Paranormal |
| Secret broadcast | Conspiracy |
| Sedlec Ossuary | History |
| Self-replicating machine | General |
| Seneca Village | History |
| Shadow person | Paranormal |
| Shag Harbour UFO incident | UFO |
| Sharon Lopatka homicide | Murder |
| Sheffield incest case | General |
| Shelly Miscavige | Disappearance |
| Shingō, Aomori | Paranormal |
| Shugborough inscription | General |
| Signals intelligence | Conspiracy |
| Simulated reality | Science |
| Simulation hypothesis | Science |
| Skinwalker Ranch | Paranormal |
| SL-1 | History |
| Sleep paralysis | Science |
| Slender man | Paranormal |
| Smile Mask Syndrome | Science |
| Smiley face murder theory | Serial killer |
| Snowtown murders | Murder |
| Societal collapse | Science |
| Sodder children disappearance | Disappearance |
| Southern Television broadcast interruption | Paranormal |
| Space elevator | Science |
| Speed Freak Killers | Serial killer |
| Spirit photography | Paranormal |
| Spontaneous human combustion | General |
| Spring-heeled Jack | Paranormal |
| Stanford Prison Experiment | General |
| Stanstead Abbotts | Ghost town |
| Starchild skull | Paranormal |
| Stargate Project | Conspiracy |
| Stateroom (surveillance program) | Conspiracy |
| Stephen Paddock | History |
| Steven Stayner | Disappearance |
| Stone Tape | Paranormal |
| STS-75 | General |
| Stull, Kansas | Ghost town |
| Suicides at the Golden Gate Bridge | Suicide |
| Supervolcano | Science |
| Tamam Shud case | Murder |
| Tanganyika laughter epidemic | History |
| Tarrare | History |
| Tecaxic-Calixtlahuaca head | History |
| Technological singularity | Science |
| Ted Bundy | Serial killer |
| Ted Kaczynski | Serial killer |
| Tempest (codename) | Technology |
| Tex Watson | Serial killer |
| Texarkana Moonlight Murders | Murder |
| Texas City disaster | History |
| Telepathy | Science |
| Thelema | Occult |
| The Collector | General |
| The Crying Boy | Paranormal |
| The Devil's Chair | Paranormal |
| The Hands Resist Him | Paranormal |
| The Holocaust | History |
| The Hum | Paranormal |
| The Process Church of The Final Judgment | Occult |
| The Springfield Three | Disappearance |
| The Stanley Hotel | General |
| The Teardrop rapist | Crime |
| Theistic Satanism | Occult |
| Therac-25 | Science |
| Third eye | General |
| Thomas Silverstein | Serial killer |
| Three tramps | Conspiracy |
| Time Cube | Paranormal |
| Time dilation | Science |
| Time formatting and storage bugs | Technology |
| Time loop | General |
| Time slip | Science |
| Time travel | Science |
| Timeline of the far future | Science |
| Timothy McVeigh | Murder |
| Total information awareness | Conspiracy |
| Toynbee tiles | General |
| Trail of Tears | History |
| Transhumanism | Science |
| Travis Walton UFO incident | UFO |
| Trepanning | History |
| Tri-State Crematory scandal | General |
| Tsutomu Miyazaki | Serial killer |
| Tunguska event | Paranormal |
| Turpin case | Incest |
| Tuskegee syphilis experiment | White People |
| UFO conspiracy theory | UFO |
| UKUSA Agreement | Conspiracy |
| Ultimate fate of the universe | Science |
| Unexpected hanging paradox | General |
| Unification movement | Occult |
| Unit 731 | History |
| Unethical human experimentation | History |
| UpStairs Lounge arson attack | Crime |
| Upstream collection | General |
| Uruguayan Air Force Flight 571 | History |
| UVB-76 | Numbers station |
| Van Eck phreaking | Technology |
| Vanishing hitchhiker | General |
| Varosha, Famagusta | Ghost town |
| Vasily Blokhin | History |
| Vic Morrow | General |
| Villisca axe murders | Murder |
| Vladimir Demikhov | Science |
| Voynich manuscript | General |
| Waco siege | General |
| War Plan Red | Conspiracy |
| Waverly Hills Sanitorium | Paranormal |
| Weather modification | Conspiracy |
| Westley Allan Dodd | Serial killer |
| Whitehall Mystery | Murder |
| White Lady | Paranormal |
| Who put Bella in the Wych Elm? | General |
| Wilhelm Reich | History |
| Will-o'-the-Wisp | General |
| William Bonin | Serial killer |
| Wow! signal | Paranormal |
| XKeyscore | Conspiracy |
| Yahweh ben Yahweh | Occult |
| Yao Jiaxin | Murder |
| Yaser Abdel Said | Murder |
| Year 10,000 problem | General |
| YOGTZE case | General |
| Yuba County Five | Disappearance |
| Zama Suicide Pact Slayings | Murder |
| Zecharia Sitchin | Paranormal |
| Zodiac Killer | Serial killer |
| Zone of Death | General |
| Zuiyo-maru carcass | General |
