When you think of the top 10 mysteries that keep detectives up at night, the Zodiac Killer’s cryptic letters from 1968‑69 often come to mind. Witnesses described a white male, 25‑30, with a crew cut and glasses, yet a dispatcher’s error mistakenly labeled him as Black, freeing a wrong suspect. Decades later, a 340‑character cipher finally cracked in 2020, yet countless other puzzles remain, begging for answers in 2021.
Why These Top 10 Mysteries Matter
10 Brayman Road Attacker
On the sweltering afternoon of 22 August 1988, Carol, a social worker, was cruising toward a psychiatric hospital in Putnam, Connecticut. As she navigated Brayman Hollow Road, a black pickup ahead began to act oddly—braking hard after a sudden surge, then crossing the center line and grazing nearby traffic. Maintaining a safe gap, Carol could not have imagined the nightmare that awaited.
Without warning, the pickup halted dead‑center, the driver leapt out, and stalked toward Carol’s stationary vehicle. He stopped a mere ten feet away, raised a gun, and fired a single shot that struck her in the face. The assailant dove back into his truck and vanished, leaving Carol semi‑conscious, her carotid artery torn and her face mangled. Miraculously, emergency responders rescued her, and she later made a full physical recovery.
Despite numerous sightings of a similar black pickup terrorizing motorists on Brayman Hollow Road, the gunman was never apprehended. Witnesses later described the driver as a white male with curly brown hair, average build, and middle‑aged today. The vehicle was a step‑side truck with flared fenders, yet the perpetrator remains at large.
9 Disappearance of Alessia and Livia Schepp
On Friday, 28 January 2011, six‑year‑old twins Alessia and Livia were snatched from their St. Sulpice, Switzerland home by their father, Mathias. The following day he messaged their mother, Irina, promising to return the children by Monday, 31 January. Instead, he whisked the twins across the French border, later sending Irina a postcard. Cameras captured Mathias up until 3 February 2011, after which he leapt under a train in Italy. The twins’ last confirmed sighting was on 31 January when Mathias boarded a ferry from mainland France to Corsica.
In a chilling note dated 3 February, Mathias confessed to killing Alessia and Livia, insisting they “did not suffer.” Investigators uncovered evidence that he researched suicide methods, poison, and firearms before the ferry trip, fueling fears the twins were indeed dead. Yet no remains have ever surfaced, leaving their ultimate fate shrouded in mystery.
8 Where Is Susan Powell?
After a neighbor left Susan Powell’s residence on the afternoon of 6 December 2009, a cascade of odd events unfolded. Relatives reported the Powell family missing on 7 December when Susan’s mother‑in‑law and sister‑in‑law could not locate anyone inside. Joshua Powell arrived later that evening, claiming he and the boys, Charles and Braden, had been camping at Simpson Springs.
Police discovered faint traces of Susan’s blood at the home on 9 December, along with a desperate letter she penned, expressing fear for her life. Braden drew a sketch of a van with three occupants and told his teacher that his “mommy was in the trunk.” Charles recounted that the family had gone camping, yet his mother never returned. A thorough search on 10 December failed to locate the alleged campsite.
Investigators later unearthed a secret will, a disturbing video, and evidence that Joshua’s father, Steven, had obsessively photographed Susan. The consensus leaned toward Joshua murdering Susan and recruiting his brother Michael to help conceal the body, though insufficient evidence prevented charges. On 5 February 2012, Joshua attacked his sons with a hatchet before a gas explosion claimed all three lives. A year later, Michael leapt from a Minneapolis parking structure, dying on impact. The case remains closed without Susan’s remains, but her family persists in the search for closure.
7 Virginia Murders
In October 2009, 20‑year‑old Morgan Dana Harrington vanished after being denied re‑entry to a Metallica concert in Charlottesville. Her last known sighting was while attempting to hitch a ride home. Her remains surfaced three months later on 26 January 2010, revealing she had been raped and brutally slain. Six years on, Jesse Matthew, a 33‑year‑old, was arrested, already facing a capital murder charge for the 2014 disappearance of 18‑year‑old Hannah Graham, whose remains were discovered five years after Morgan’s murder.
Beyond these two, several other young women disappeared in the Charlottesville area: 17‑year‑old Alexis Murphy vanished from a Lovingston gas station in August 2013; her remains remain missing, though evidence linked 48‑year‑old Randy Taylor to her case. Samantha Ann Clarke, 19, disappeared in September 2010 after leaving home with only her keys; 19‑year‑old Dashad “Sage” Smith vanished in November 2012 after promising to return soon. Both families still lack answers. Sage’s suspected abductor, Erik McFadden, disappeared in 2019 after his mother reported him missing. Randy Taylor is a suspect in Samantha’s disappearance but has not been charged due to insufficient evidence, leaving both cases unresolved.
6 The Case of the Tortured Teenager
In February 1979, Bob Livesey began a night shift at Leyland Motors, unaware that his wife Margaret was meeting a lover at a pub in Bamber Bridge, Lancashire. After the rendezvous, Margaret’s 14‑year‑old son Alan was grounded, staying in his room. Margaret later visited a neighbor’s house, and the neighbor’s son later discovered Alan lying face‑down before a gas fire, his face bearing knife marks, his eyelid slashed, and his body riddled with stab wounds, all while he was bound.
Within five days, Margaret confessed to stabbing Alan with a kitchen knife, claiming she lost control after an argument. Three days later, she recanted, alleging police coercion. After two trials, she was convicted and sentenced to life, later released on parole in 1989, maintaining her innocence until her 2000 death from cancer.
Supporters argue the timeline—roughly a thirty‑minute window—could not accommodate Margaret traveling home, committing the murder, and visiting the neighbors. Some theories posit an unidentified figure observed in the Livesey backyard that night. Margaret’s family continues to protest her innocence, and a 2016 inquiry revisited the evidence, yet the outcome remains unknown.
5 What Happened to Diane Dye?
Thirteen‑year‑old Diane Genice Dye struggled after her parents’ divorce in 1979. Her father had moved out of their San Jose home, and her mother worked long hours, leaving Diane feeling adrift. She began smoking marijuana and skipping school. On 30 July 1979, Diane told her close friend Natja she wanted to run away. Natja comforted her for an hour, after which Diane thanked him and asked to be left alone.
Three days later, Natja arrived at Diane’s house to find her mother in distress; Diane had been missing for three days. Over the ensuing 41 years, alleged sightings of Diane have surfaced across the United States, yet none proved credible. A friend claimed to have seen Diane at a mall in December 1981, with Diane allegedly stating she had no intention of returning home.
Authorities have repeatedly questioned death‑row inmate Doug Young, who denies any involvement despite reportedly speaking with Diane before her disappearance. To date, no new leads have emerged, and Diane’s vanishing remains an unresolved mystery.
4 Who Shot Cherice Lynnae Jacobsen?
On the night of 8 March 1990, sixteen‑year‑old Cherice Lynnae Jacobsen attended an all‑night prayer vigil at the Christian Life Centre in Stockton, California. Determined to graduate in June and pursue Christian Life College, she briefly left the vigil, returning at midnight. At 1:30 am she stepped out to retrieve a bottle of lotion from a car in the parking lot, then re‑entered the building at 1:40 am.
Pastor’s son Nathaniel, stationed near the front door, heard a sudden “pop” and saw Cherice pause, glance over her shoulder, and collapse. He rushed to her side, discovering a gunshot wound to the head just above her left ear. Cherice was rushed to the hospital but succumbed two hours later.
Weeks before her death, Cherice recounted a vivid dream to family and friends: she stood before an executioner, hearing the Lord proclaim, “There will be many youths brought into the Kingdom of God because of your death.” The executioner urged her to deny God; she refused. Her best friend, Cindy Garcia, reported that Cherice seemed aware of her impending death and wished Nathaniel to officiate her funeral. The case remains officially cold in 2021, with no one charged.
3 The Beaumont Children
On 26 January 1966, the Beaumont siblings—nine‑year‑old Jane, seven‑year‑old Arnna, and four‑year‑old Grant—set out for a beach near their Somerton Park, Adelaide home. Their mother, Nancy, gave them permission to spend the day at the sea. The children boarded a bus around 10:10 am, Jane clutching a copy of Little Women.
While they played on the beach, an elderly observer noticed a tall, blond man in blue swim trunks watching them. He approached, and the woman later saw the children leave with him. Witnesses also recalled the trio buying a meat pie at a nearby cake shop, paying with a one‑pound note, and later being helped by the man in blue to change out of their wet clothes after sprinklers at Colley Reserve. That moment marked the last confirmed sighting; the children never returned home.
Police pursued every lead, but Nancy Beaumont passed away in 2019 at 92 without ever learning her children’s fate. Authorities continued digging, most recently excavating an Adelaide factory site in 2018, yet no new clues emerged. The mysterious man in the blue trunks remains unidentified.
2 The Imposter
Thirteen‑year‑old Nicholas Barclay faced a court hearing scheduled for 14 June 1994, which would decide whether he would be placed in a juvenile detention home. He vanished on 13 June 1994, and his family initially assumed he had fled to avoid the hearing.
Three years later, Spanish police contacted San Antonio officials, claiming they had located Nicholas after he escaped a military child‑sex‑trafficking ring. Nicholas’s sister, Carey, traveled to Spain and positively identified the man, despite noticeable differences: brown hair and eyes versus Nicholas’s blond hair and blue eyes, and a pronounced French accent absent in Nicholas. Nevertheless, the Barclay family accepted the imposter’s explanations and instructed local police to close the case.
Detective Charlie Parker remained skeptical and eventually compelled the impostor to confess his true identity as Frédéric Bourdin, a fugitive on the run from Interpol. Bourdin had infiltrated the Barclay home for five months before being sentenced to six years in prison. Nicholas Barclay’s whereabouts remain unknown, and whether he is still alive is uncertain.
1 The Missing Girls
Between 1988 and 1990, a series of heinous kidnappings shook South Africa. Thirteen‑year‑old Joan Horn, eleven‑year‑old Odette Boucher, twelve‑year‑old Anne‑Marie Wapenaar, twelve‑year‑old Yolande Wessels, twelve‑year‑old Fiona Harvey, and fourteen‑year‑old Tracey‑Lee Scott Crossley were abducted by paedophile Gert van Rooyen and his lover Joey Haarhoff. Sixteen‑year‑old Joan Booysen escaped from Van Rooyen’s Pretoria residence, alerting police.
When Van Rooyen realized his capture was imminent, he shot Haarhoff before turning the gun on himself. Over the ensuing years, police exhausted every avenue: demolishing Van Rooyen’s home to search for clues, excavating his garden and swimming pool, probing a cemetery in northwest Pretoria, and combing Blythedale Beach in Durban after learning Van Rooyen had vacationed there shortly before his death.
Despite these extensive efforts, no trace of the kidnapped girls has ever been uncovered, leaving their fate a haunting and unresolved mystery.