Unusual Suspects

A Philadelphia suburb is rocked by the murder of 67-year-old Alice Hufnagle.

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.

Investigators suspect a college student's kindheartedness may have led a killer to his door.

A video tape surfaces after a naval officer is raped and stabbed suggesting a cover-up.

In Fort Pierce, Fla., detectives investigate the strangling death of a tax attorney.

A small-town matriarch's friends and neighbors come under suspicion after she is found murdered.

A young Navy wife is found raped and strangled to death in her home near the Mayport Naval Station.

Investigators uncover the heartbreaking truth behind an elementary school teacher's 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 if Mollie knew her killer. Seventeen years of dogged investigation reveal the terrifying truth.

In La Jolla, Calif., telemarketing manager David Stevens' charred body is found in a burned-out car.

After Dalene Carlson goes missing, a tractor operator makes a gruesome discovery in a cornfield.

A young girl vanishes, and the case goes cold until a bus-stop encounter breathes new life into it.

Student Deborah Wilson is found strangled to death in a computer lab without her shoes and socks.