Unsolved cases
Homicides and other crimes with no one held responsible. Some are a century old. Some are from this year.
I-70 Strangler
The I-70 Strangler is the nickname of an unidentified American serial killer who murdered at least twelve boys and men in the Midwest between 1980 and 1991. All of the victims' bodies were discovered in areas along Interstate 70 (I-70). Though officially unsolved, it is believed that deceased businessman Herb Baumeister, a suspect in over a dozen homicides in Indiana, might have been the perpetrator.
1975UnsolvedBigfoot Killer
The Bigfoot Killer is the name given to an unidentified American serial killer who raped and murdered seven girls and women in Detroit between February and October 1975. All of the victims were engaged in prostitution and impoverished, with their killings taking place in the Cass Corridor neighborhood.
1981 · OhioUnsolved
Dr. No
Dr. No is the nickname given to a suspected American serial killer thought to be responsible for the murders of at least ten women and girls in Ohio, between 1981 and 1990. As victims, Dr.
2001 · IllinoisUnsolvedChicago Strangler
The Chicago Strangler is a suspected serial killer, or group of killers, believed by some to be responsible for the deaths of women in Chicago, Illinois. The Murder Accountability Project has identified 51 strangulation and asphyxiation deaths in the city between 2001 and 2018. Most of the victims were Black women, and many of the bodies were found on the city’s South and West Sides.
1979 · IdahoUnsolvedLewis–Clark Valley murders
The Lewis–Clark Valley murders refer to a cluster of unsolved murders and disappearances that occurred in the Lewiston-Clarkston metropolitan area of northern Idaho between 1979 and 1982. Law enforcement investigators have identified four victims and possibly a fifth that are connected to a single suspect.
1900 · OhioUnsolvedDayton Strangler
The Dayton Strangler was an unidentified early 20th-century serial killer, responsible for the murders of five women and one man in Dayton, Ohio from 1900 to 1909. Although a multitude of suspects were arrested, including one who was wrongfully convicted, the murders remain officially unsolved to this day. Theories have surfaced tying the murders in Dayton to the Cumminsville Killer, another unidentified serial…
1904 · OhioUnsolved
Cumminsville Killer
The Cumminsville Killer, also known as the Cumminsville Ripper, the Slouch Hat Man and the Man Gorilla, was an unidentified serial killer who is believed to have claimed five victims in the Cumminsville neighborhood of Cincinnati, Ohio, United States, between 1904 and 1910. Theories have surfaced tying the murders in Cumminsville to the Dayton Strangler, another unidentified serial killer believed to have been…
1982 · New MexicoUnsolved1980s Franciscan priest murders
The 1980s Franciscan priest murders refers to the mysterious disappearances and murders of two Catholic priests, one of whom was a Franciscan, in the western United States between 1982 and 1984. On August 5, 1982, Father Reynaldo Rivera, a priest at the Cathedral Basilica of St. Francis of Assisi in Santa Fe, New Mexico, was murdered in an unknown location and his body found three days later.
1903 · ColoradoUnsolvedDenver Strangler
The Denver Strangler was an unidentified serial killer operating in Denver, Colorado from 1894 to 1903. He was responsible for killing three prostitutes in the span of 10 weeks in 1894, and although many suspects were arrested, nobody was convicted. The Strangler is also supposedly responsible for the 1898 murder of clairvoyant Julia Voght and 1903 murder of Mabel Brown, but this remains only speculation.
1917 · WisconsinUnsolved
Milwaukee Police Department bombing
The Milwaukee Police Department bombing was a November 24, 1917, bomb attack that killed nine members of local law enforcement and a civilian in Milwaukee, Wisconsin. The perpetrators were never caught but are suspected to be an anarchist terrorist cell operating in the United States in the early 20th century. The target was initially an evangelical church in the Third Ward and only killed the police officers when…
1939 · NevadaUnsolved
1939 City of San Francisco derailment
On August 12, 1939, the City of San Francisco train derailed outside of Harney, Nevada, United States, killing 24 and injuring 121 passengers and crew. The derailment was caused by sabotage of the tracks. Despite a manhunt, reward offers, and years of investigation by the Southern Pacific Railroad (SP), the case remains unsolved.
1985 · WashingtonUnsolved
Mineral, Washington murders
The Mineral, Washington murders, dubbed by the media as "the Tube Sock Killings," is a series of unsolved murders that occurred in remote areas of Lewis and Pierce counties, Washington, near the remote community of Mineral, Washington, in 1985. The murder cases were widely publicized, and were featured on the television series Unsolved Mysteries in 1989.
1992UnsolvedI-70 killer
The I-70 killer is an unidentified American serial killer who is believed to have killed six store clerks in the Midwestern United States in the spring of 1992. His nickname derives from the fact that several of the stores in which his victims worked were a few miles from Interstate 70. The victims were usually young, petite, brunette women.
2006 · New JerseyUnsolvedEastbound Strangler
The Eastbound Strangler is an unidentified serial killer believed to be responsible for the murders of four women near Atlantic City, New Jersey, United States, in 2006. A $25,000 reward offered for information has gone unclaimed.
1976 · CaliforniaUnsolvedGypsy Hill killings
The Gypsy Hill killings were a group of five homicides of young women and girls in San Mateo County, California, during early 1976. The killer became known in the media as the "San Mateo Slasher." It was later proven that there were at least two different perpetrators with Rodney Halbower convicted of the murders of Baxter, Cascio and Michelle Mitchell and Leon Seymour being convicted in the sole murder of Lampe. It…
1990 · New MexicoUnsolvedLas Cruces bowling alley massacre
The Las Cruces bowling alley massacre occurred in Las Cruces, New Mexico, United States, on February 10, 1990. Seven people were shot, five fatally, by two unidentified robbers at the Las Cruces Bowling Alley at 1201 East Amador Avenue. The gunmen shot the victims in an office, then set fire to a desk in the room and left the scene.
Year unknown · North CarolinaUnsolvedEdgecombe County serial killer
The Edgecombe County serial killer is an unidentified serial killer in the surroundings of Edgecombe and Halifax counties in North Carolina, United States. There are ten suspected victims, all African-American women, and the remains of eight have been recovered. Because some of the victims had been found near the Seven Bridges Road in Rocky Mount, the culprit has also been called The Seven Bridges Killer.
1972Unsolved
Charlie Chop-off
Charlie Chop-off is the pseudonym given to an unidentified American serial killer known to have killed three black children and one Puerto Rican child in Manhattan between 1972 and 1973. The assailant is also known to have attempted to murder one other child. All the victims of Charlie Chop-off were male, and all but one of the attacks involved genital mutilation or attempted genital mutilation of the victims.
1988 · MassachusettsUnsolvedNew Bedford Highway Killer
The New Bedford Highway Killer is an unidentified serial killer responsible for the deaths of at least nine women and the disappearances of two additional women in New Bedford, Massachusetts, between March 1988 and April 1989. The killer is also suspected to have assaulted numerous other women. All the killer's victims were known prostitutes or had struggles with addiction.
1978 · ConnecticutUnsolved
Connecticut River Valley Killer
The Connecticut River Valley Killer, also known as the Valley Killer, is the moniker for an unidentified American serial killer believed to be responsible for at least seven murders of women in the Connecticut River Valley region of New England between 1978 and 1988. In 1985 and 1986, the skeletal remains of two victims were recovered within one thousand feet (300 m) of each other in a wooded area in Kelleyville,…
1977 · OklahomaUnsolvedOklahoma Girl Scout murders
The Oklahoma Girl Scout murders took place on the morning of June 13, 1977, at Camp Scott in Mayes County, Oklahoma, United States. The victims were three Girl Scouts, between the ages of 8 and 10, who were raped and murdered. Their bodies were then left on a trail leading to the campsite's showers, about 150 yards (140 meters) from their tent.
1905 · MontanaUnsolved
Frank Little
Franklin Henry Little (1877 or 1878 – August 1, 1917), commonly known as Frank Little, was an American labor leader who was murdered in Butte, Montana. No one was apprehended or prosecuted for Little's murder. He joined the Industrial Workers of the World in 1905, organizing miners, lumberjacks, and oil field workers.
2026 · Birmingham field officeUnsolvedGadsden Islamic Center Arson
Unknown Suspect(s) Gadsden, Alabama November 11, 2026
1968 · CaliforniaUnsolved
Zodiac Killer
The Zodiac Killer (also known by the pseudonym The Zodiac) is an unidentified serial killer who murdered at least five people in the San Francisco Bay Area between December 1968 and October 1969. The Zodiac attacked three couples and a cab driver in Benicia, Vallejo, unincorporated Napa County, and the city of San Francisco. Two of the Zodiac's seven victims survived.