Days before Thanksgiving, a small Philly suburb is rocked by the murder of 67 year-old Alice Hufnagle. Investigators run down a litany of suspicious characters on the road to unmasking the beloved matriarch's killer.

When a 16 year-old ballet dancer is assaulted and murdered in her home, Portsmouth, Virginia detectives mine dark family secrets and high school social circles to bring an obsessed killer to justice.

When investigators discover the body of a 28-year-old photographer and college student in Arlington, Texas, police begin to speculate that the victim's willingness to assist others and generous nature may have invited a killer into his life.

When a Naval Officer is apparently raped and stabbed by a coworker, a mysterious VHS tape suggests the victim may have been silenced to prevent a scandal. Dogged investigation and cutting edge forensic science reveals a shocking murder plot.

When a successful tax attorney is found strangled to death on his Ft. Pierce, Florida property, detectives scrutinize jealous boyfriends, deadbeat tenants, and delinquent clients on their way to finding their killer.

When a beloved matriarch is found murdered in her Hubbardston, Michigan home, investigators cast a suspicious eye on friends and neighbors, determined to solve the small town's first homicide.

In December of 1990, young Navy wife and mother Dina Kichler is found brutalized and strangled in her Mayport, Florida apartment. Investigators work through a list of the victim's admirers before closing in on the killer.

In 1993, an elementary school teacher goes missing after her first day at a new job. Over the next two months, investigators sift through clues, piecing together the heartbreaking truth behind the young educator's sudden disappearance.

In 1986, 13 year-old Mollie Pittman is attacked and murdered in the Orlando home of family friends. With no sign of a break-in, investigators wonder, did Mollie know her killer? Seventeen years of dogged investigation reveal the terrifying truth.

In December of 1998, the body of telemarketing manager David Stevens is found in a torched car in La Jolla, California, the victim of homicide. Detectives encounter a rogue's gallery of suspects and outlandish leads on their way to finding the killer.

In 2011, Dalene Carlson goes missing, just weeks after relocating to Stockton, California. As investigators search for the missing 23 year-old, a shocking discovery in a nearby cornfield sets them on the trail of a vicious killer.

A girl disappears in Montana, but a chance encounter at a bus stop years later will lead police to the truth.

After an all-night study session in a university lab, math student Deborah Wilson is found strangled, missing her shoes and socks. Years later, Philadelphia investigators unearth the shocking obsession that drove a killer to take her life.