Investigators soon realized a fire had been set to cover up the murder of a young woman, Anne Harper.

For years, parents have worried their trick or treaters might be poisoned by an unsuspecting neighbor on Halloween, but is there any validity to the myth?

Doreen Erbert opened the door on Halloween night in 1984 and found a man wearing a big, bad wolf mask, carrying a machete in a terrifying slaying that played out in front of her young 4-year-old daughter.

After finding Sue Marshel and Melinda Marshel's skulls in a duffle bag, an investigator said it “was the most horrific thing I could ever imagine seeing.”

Megan Barroso had celebrated the 4th of July holiday with friends. Soon after, her car was found, but there was no sign of Megan.

Specials days set aside for fireworks, parades, and festive gatherings can tragically be marked by murder, as seen on Homicide for the Holidays.

Past episodes of Homicide for the Holidays have featured New Year's Day shootings and gunmen dressed as Santa Claus.

Season Five unwraps six chilling stories of holidays throughout the year.

On Christmas Eve in 2013, Salvatore “Sal” Belvedere, 22, and Ilona Flint, 22, were found shot in their car in the parking lot of the Mission Valley Mall in San Diego. 

Who murdered a prominent Alabama couple, the Springfords, on Thanksgiving? A multi-state investigation provided the answer.