The 10 Most Shocking Unsolved Murders in America — Cases That Haunted the Nation

TRENDEDGE COLD CASE FILES — Every year, more than 5,000 homicides in the United States go unsolved. Most fade from memory within weeks. But some cases are different — they burrow into the national consciousness and refuse to leave.

These are the 10 unsolved murders that defined American true crime — the cases that launched podcasts, documentaries, congressional investigations, and generational obsessions. And every one of them remains officially open.

1. JonBenét Ramsey — Boulder, Colorado (1996)

The six-year-old beauty queen found murdered in her family’s basement on Christmas Day. Her parents were suspected, then cleared by DNA evidence. An unknown male’s DNA was found on her clothing. Despite three grand juries, multiple suspects, and 28 years of investigation — nobody has ever been charged. The case is still active with the Boulder Police Department.

2. The Zodiac Killer — California (1968-1969)

He taunted police and newspapers with coded letters. He claimed 37 victims; authorities confirmed at least 5. He was never caught. Despite the 2021 claim by a team called “The Case Breakers” that they identified him as Gary Francis Poste (now deceased), the San Francisco Police Department has not confirmed any suspect.

3. Tupac Shakur — Las Vegas, Nevada (1996)

Shot four times in a drive-by shooting after a Mike Tyson fight. He died six days later at 25. Las Vegas police recently reopened the investigation and executed a search warrant at a suspect’s home in 2023 — 27 years later. No charges filed. The case remains open.

4. The Black Dahlia — Los Angeles, California (1947)

Elizabeth Short’s body was found severed at the waist, completely drained of blood, and arranged with surgical precision. More than 150 men confessed — all eliminated. The case became the defining unsolved murder of 20th-century America.

5. Laci Peterson… [Case continues]

Actually solved — husband Scott Peterson convicted. Removed from unsolved list.

5. Chandra Levy — Washington, D.C. (2001)

The 24-year-old intern disappeared during her relationship with Congressman Gary Condit. A man was convicted in 2010, then acquitted in a retrial in 2016. No one has ever been convicted of her murder. The case is officially cold.

6. The Long Island Serial Killer (LISK) — New York (2010-present)

At least 10 bodies — most sex workers — found dumped along Ocean Parkway on Long Island. The killer taunted victim families via phone calls, mocking police. DNA links multiple victims. Despite a 14-year investigation and multiple persons of interest, no arrest has ever been made.

7. DB Cooper — Pacific Northwest (1971)

The only unsolved air piracy case in US history. A man hijacked a Northwest Orient flight, demanded $200,000 in ransom, then parachuted from the plane over the Pacific Northwest wilderness and was never seen again. The FBI officially closed its active investigation in 2016 after 45 years. The file remains open.

8. The Delphi Murders — Indiana (2017)

UPDATE: Richard Allen was convicted in October 2024. Case solved. — TRC

8. Kristin Smart — California (1996)

UPDATE: Paul Flores convicted in 2022. Replaced by:

8. The I-70 Killer — Multiple States (1992)

Seven people were shot dead in sporting goods and shoe stores along the I-70 corridor from Kansas to Indiana over three months in 1992. All victims were shot in the right eye. The killer left no DNA, no witnesses, and no motive. The FBI has 25 suspects. None charged. The file stays open.

9. Nicole Brown Simpson and Ron Goldman — Los Angeles (1994)

O.J. Simpson was acquitted of criminal charges in 1995, then found liable in a civil trial in 1997. He never revealed what he knew. He died in April 2024 of cancer, taking any answers with him. The murders are officially unsolved.

10. Adam Walsh — Hollywood, Florida (1981)

The six-year-old son of America’s Most Wanted host John Walsh was abducted from a Sears store. His severed head was found weeks later. His killer was named in 2008 — serial killer Ottis Toole, already dead. The case was officially closed. But Toole’s guilt has been questioned by Walsh’s family and some investigators. The full truth may never be known.

qivsy will continue tracking developments in these cases. If you have information relevant to any unsolved case, contact the relevant law enforcement agency or the FBI’s tip line at 1-800-CALL-FBI.