Behind his friendly demeanor lurked a deadly obsession with torture and murder.
Investigators hope that new technology will help find justice for the Zodiac's victims.
From the Suffolk Strangler to Jack the Ripper, these British serial killers left a grisly trail of death in their wake.
His murder spree spanned years and crossed continents.
In a controversial true crime book, Nancy Styler maintains that she played no part in the murder of her socialite landlord.
She looms large in the annals of American crime lore. But how well do you truly know Lizzie Borden?
Helen Bailey went on a walk with her dog one afternoon—and was never seen alive again.
Over 40 years later, the killer's whereabouts remain unknown.
What began as a robbery turned into massacre that left just one survivor...
The duo murdered three innocent people in their "holy war against witches."
Their dream home in the country soon became a site of unspeakable tragedy.
In 2005, an ex-convict brutally murdered his girlfriend—and made her daughter watch.
This murderous couple tortured their victims mercilessly.
The architect's idyllic estate became a house of horrors.
It remains one the most gut-wrenching murder sprees in Australia's history.
Find a new chiller to dive into this summer.
Peer into Scotland Yard's true crime treasure trove.
His body was found stuffed inside a duffel, with the bag's zipper padlocked from the outside.