On New Year's Eve 2018, U.S. Army Sergeant, Tyrone Hassel III was murdered by his wife, Kemia Hassel, and her lover, Jeremy Cuellar, who were also soldiers.

According to testimony from friends and family, victims of the "Killer Clown" shared some surprising common connections and tragedies in their lives.

Across the United States, cadaver dogs are used in a variety of crime investigations, ranging from missing persons cases to murder.

In 1999, Cary Stayner, brother of high-profile abduction victim, Steven Stayner, murdered four females at Yosemite National Park. Where is he today?

Sam Kean, author of the book 'The Icepick Surgeon,' discusses unethical undertakings done in the name of science, ranging from Nazi 'medical' experiments to the Tuskegee syphilis study to icepick lobotomies.

Between 2007 and 2009, Anthony Sowell, a former U.S. Marine and convicted sex offender who had served 15 years in prison, murdered 11 women and hid their remains inside his Cleveland home.

Scott Peterson, who was found guilty of the murders of his wife, Laci Peterson, and their unborn son, on November 12, 2004, was at San Quentin State Prison but in 2022 was transferred to Mule Creek State Prison while his family fights for a new trial.

Rita Smith, a renowned domestic violence expert and advocate, tells A&E True Crime about some red flags that indicate an abusive partner may be homicidal.

The 1992 murder of Pennsylvania teacher Christy Mirack was solved after police uploaded the suspect's DNA to a public genealogy database.

Dr. Dennis Dirkmaat explains how forensic anthropology helped crack the Sherry Leighty murder case over a decade after the Pennsylvania woman went missing.