After an apparent brazen home invasion during the holiday season in a quiet Connecticut community leaves Connie Dabate dead, investigators discover a silent witness that cracks the case wide open.

A young Fairfield, Ohio, woman, 21-year-old Katelyn Markham, vanishes one summer night in 2011, prompting her community to conduct a massive search. When her skeletal remains are found in Indiana two years later, investigators question her friends and family to uncover her killer, but it takes 12 years and a detective with dogged determination.

In Humble, Texas, a frantic 911 caller, 16-year-old Keri Murphy, reports hearing her mother's screams after an intruder entered their home. When first responders arrive, they find Mary Ann Murphy dead after receiving more than 70 stab wounds. What happened on that dark summer night?

An elderly socialite is reported missing from her stately New York City brownstone. When Sante Kimes and her son Kenny are arrested, an investigation reveals decades of crime, deception, and murder that captivated the nation.

The high-profile case of two murdered Indiana teens takes a stunning turn after video of the killer, taken by one of his victims shortly before their deaths, is revealed.

In 2013, Desiree Sunford is found murdered in her Yakima, Washington, home. The case, which begins with what seems to be a simple burglary, spirals into a complex investigation exposing a tangled web of betrayal, deception, and fatal obsession.

Mike Sisco and his fiancé Karen Harkness are found shot to death in their Topeka duplex in 2002. A years-long search for the killer and three criminal trials over two decades reveals strained dynamics within one victim’s family.

Simeonette Mapes-Crupi, a beloved Staten Island teacher, is found dead in the home she shared with her husband.