America's Most Notorious Unsolved Murders

Cases That Time Has Not Closed

Some murder cases defy resolution. Despite advances in forensic science, despite renewed public interest, despite the dedicated work of investigators across generations — they remain open. The killers have never been identified, never been charged, never faced justice.

These are not forgotten cases. They are among the most examined, most analyzed, most debated criminal investigations in American history. And yet they remain unsolved.

Here are some of the cases that continue to haunt investigators, families, and the public.

1. The Zodiac Killer (California, 1968–1969)

The Zodiac Killer claimed at least five confirmed murders in Northern California between 1968 and 1969, though he claimed responsibility for 37 in the cryptic letters he sent to newspapers. He taunted law enforcement with ciphers, three of which remained unsolved for over 50 years.

In 2020, a team of amateur codebreakers cracked the 340-character cipher, which read in part: "I hope you are having lots of fun in trying to catch me... I am not afraid of the gas chamber." The decoded message provided no new identifying information.

Hundreds of suspects have been proposed over the decades. Arthur Leigh Allen, a convicted sex offender who died in 1992, remains the most widely discussed. But forensic analysis has never definitively linked any suspect to the crimes. The case remains officially open.

2. The Black Dahlia (Los Angeles, 1947)

On January 15, 1947, the body of Elizabeth Short, 22, was found in a vacant lot in Los Angeles. She had been murdered and her body precisely bisected at the waist, drained of blood, and posed. The crime scene showed evidence of extreme medical precision.

The case generated over 150 confessions in the weeks following discovery — none credible. LAPD conducted one of the largest investigations in the department's history. No one was ever charged.

Dozens of books have proposed suspects ranging from doctors to film industry figures. The case has never been solved and Elizabeth Short's killer has never been identified.

3. The Delphi Murders (Indiana, 2017)

On February 13, 2017, Abigail Williams, 13, and Liberty German, 14, went hiking on a trail near Delphi, Indiana. They never returned. Their bodies were discovered the following day.

What made this case extraordinary was that Liberty had filmed her killer on her phone before her death — capturing both video and audio of a man who appeared to direct the girls off a bridge. The footage was released publicly, generating millions of tips.

After years of investigation, Richard Allen, a local pharmacist, was arrested in 2022 and charged with both murders. The case proceeded to trial amid significant controversy over evidence handling and defense access to materials. As of 2026, legal proceedings continue. The full truth of what happened on that trail remains contested.

4. The Servant Girl Annihilator (Austin, Texas, 1884–1885)

Before Jack the Ripper terrorized London, a serial killer struck Austin, Texas — and was never caught.

Between 1884 and 1885, eight people were murdered in Austin, most of them Black women who worked as domestic servants. The victims were attacked in their beds in the middle of the night, dragged outside, and killed with an axe-like weapon.

The killer was never identified. Some historians have theorized that the same individual went on to commit the Whitechapel murders attributed to Jack the Ripper in London in 1888, though no definitive connection has ever been established.

5. The Springfield Three (Missouri, 1992)

On the night of June 6, 1992, three women — Suzie Streeter, Sherrill Levitt, and Stacy McCall — vanished without a trace from a Springfield, Missouri home. Suzie and Sherrill were mother and daughter; Stacy was a friend who had spent the night.

There was no sign of struggle. The door was unlocked. A broken porch light was the only indication anything was amiss.

No bodies have ever been found. No suspects have ever been charged. The case remains one of the most baffling disappearances in Missouri history, generating dozens of theories and no conclusive answers.

6. The Tylenol Murders (Chicago, 1982)

In September and October 1982, seven people in the Chicago area died after taking Extra Strength Tylenol capsules laced with potassium cyanide. The poisonings triggered a nationwide panic, led to the recall of 31 million bottles, and permanently changed how medications are packaged.

James Lewis was convicted of extortion for sending a letter demanding $1 million to stop the killings, but was never charged with the murders themselves. He maintained his innocence until his death in 2023. The FBI investigated the case for decades without making an arrest.

In 2023, investigators announced they had obtained a DNA profile from the original evidence, potentially opening a new investigative avenue. The case remains officially unsolved.

7. The Long Island Serial Killer (New York, 2010–present)

Between 2010 and 2011, the remains of at least 11 people were discovered along a stretch of Gilgo Beach on Long Island, New York. Most were women believed to have worked in the sex trade. The case was dubbed the Gilgo Beach murders.

For over a decade, the investigation stalled amid accusations of law enforcement mismanagement and disinterest in the victims. Then in 2023, Rex Heuermann, a Long Island architect, was arrested and charged with the murders of four of the victims.

He pleaded not guilty. As of 2026, the case against Heuermann is proceeding, but the identities of several victims remain unknown and the full scope of the crimes unclear.

8. The Keddie Cabin Murders (California, 1981)

On April 12, 1981, four people were found brutally murdered in Cabin 28 of the Keddie resort in the Sierra Nevada mountains: Sue Sharp and three others, including two teenagers. Three of Sue's children slept through the attack in an adjacent cabin and were found alive in the morning.

Despite the proximity of the children — potential witnesses — and the small, close-knit community in which the murders occurred, no one was ever charged. A partial skull discovered in 1984 was later identified as belonging to one of the missing victims.

The case generated intense interest in the true crime community and has been examined in detail by podcasts and documentaries. No definitive resolution has been reached.

9. The Grimes Sisters (Chicago, 1956)

Barbara and Patricia Grimes, teenagers from Chicago, went to see an Elvis Presley movie on December 28, 1956, and never came home. Their frozen bodies were found in a ditch on January 22, 1957.

The investigation was one of the largest in Chicago's history, involving thousands of interviews and multiple suspects. No one was ever charged. Theories about what happened to the Grimes sisters — and who was responsible — persist to this day.

10. The Villisca Axe Murders (Iowa, 1912)

On the morning of June 10, 1912, eight people — six members of the Moore family and two overnight guests — were found bludgeoned to death in their home in Villisca, Iowa. The murders were committed with an axe that was left at the scene.

The case generated multiple suspects and two trials, both of which ended without conviction. Over a century later, no one has ever been definitively identified as the killer.

The Villisca house still stands and has become a destination for true crime enthusiasts and paranormal investigators. The case itself remains open.

Why Cases Go Unsolved

These ten cases represent a fraction of the unsolved homicides in American history. What do they have in common?

Time destroys evidence. Biological material degrades. Witnesses die. Memories fade. Every year that passes without resolution makes resolution harder.

Initial investigation errors. In many of these cases, early missteps — failure to secure the crime scene, premature release of evidence, tunnel vision on the wrong suspect — compromised the investigation in ways that couldn't be undone.

Bias in law enforcement. Cases involving victims from marginalized communities consistently receive less investigative attention and fewer resources than cases involving white victims of higher socioeconomic status.

The limits of science. Forensic technology is powerful but not omnipotent. Not every crime scene yields usable DNA. Not every DNA profile finds a match.

For the families of these victims, the absence of resolution is not abstract. It is a wound that never fully closes — the question that outlives everyone who remembers asking it.

At NaturalQueen77 TV, we are committed to keeping these cases in the public consciousness until they are solved.