When the mutilated body of 17-year-old Lori Billingsley is found in a ditch on the outskirts of town, it's obvious a sadistic killer is on the loose in Oregon. But when the case goes cold, it's her sister who is determined to get justice for Lori.

Deep in Southern Louisiana, the bodies start piling up in a series of deadly home invasions. There's a curious link between the victims and a similar MO, and before long a combined task force is on the hunt for a serial killer.

In a sleepy New Hampshire town, a man answers a knock at the door and is shot dead through the screen. Investigators are stumped. That is, until they uncover a seething grudge and a culprit closer to home than anyone could have imagined.

A high school senior is murdered in her family's Minnesota farmhouse, but with little evidence the case soon goes cold. Years later, a fresh set of eyes spots an overlooked clue, but cold case detectives will need more to convict the killer.

A respected widow is beaten to death in her Salt Lake City home. Investigators suspect the victim knew her killer, but it will take 20 years before a set of children's fingerprints can put him at the scene of the crime.

When 18-year-old Lisa Monzo is murdered in San Lorenzo, California, investigators look for a connection to other unsolved murders in the area. But it will take several years and help from an unlikely source before they can track down her killer.

18-year-old Debra Ann Dill had just quit high school to get married to a local police officer. Dill leaves one night for a date with her fiancé, but the next morning, her body is discovered next to her car. Twelve state police investigators are assigned to the case, but after interviewing hundreds of people, the case goes cold. That is, until 15 years later when a phone call from a Connecticut prison changed everything.

Kimberly Dunkin's body is found with a single gunshot to the head. At first, investigators suspect she was the victim of a gang war. It will take 15 years, a deck of playing cards, and a lucky break before the case finally begins to unravel.

While building their dream home, Matthew Monahon discovers his pregnant wife Kelsey hogtied on the floor and clinging to life. When she dies days later, a $300,000 life insurance policy casts him as the number one suspect.

31-year-old bartender Deborah Fielding’s body is dumped in an Orlando park. And as detectives connect the dots, a spate of seemingly random beatings, carjackings, and murders tells the story of a one-man crime spree.

The body of Marilyn Habian, a popular teacher with a passion for dance, is found in the basement of her home. There are no witnesses or signs of forced entry, but evidence from the crime scene suggests Habian caught the perpetrator in the act before she was shot in the heart.

On her last day as a high school freshman, 14-year-old Jessica McHenry vanishes. The victim of a shocking and brutal murder, her badly burned body is found in a field just outside of town. While her sleepy community deals with the aftermath, police hunt for a monster.

14-year-old Gloria Pointer is snatched off the street, assaulted and murdered on her way to school. Detectives work the case day and night, but a lucky break nearly 30 years later will put the culprit behind bars. Now her mother, Yvonne Pointer is dedicated to serving others.

Modern cold-case detectives have plenty of high-tech tools at their disposal. But their hard work may not only expose a killer; it can sometimes reveal missteps and missed opportunities in the original investigation.

In 1999, 19-year-old journalism student, Brook Baker, is murdered in her apartment sending shock waves through the once peaceful Vincennes, Indiana, and setting in motion a desperate police investigation.

A hard-working single mom is murdered in a Michigan town where violent crime rates are nearly four times the national average. And while a TV celebrity leads a major media campaign, the search is on for a mysterious man known only as ‘B’.

When the mutilated body of 17-year-old Lori Billingsley is found in a ditch on the outskirts of town, it's obvious a sadistic killer is on the loose in Oregon. But when the case goes cold, it's her sister who is determined to get justice for Lori.

While building their dream home, Matthew Monahon discovers his pregnant wife Kelsey hogtied on the floor and clinging to life. When she dies days later, a $300,000 life insurance policy casts him as the number one suspect.

Attorney Angela Ordonez finds herself pulled into the murder case of teenage mom, Noemi Roman. She becomes personally involved in tracking down the murderer - an emotional journey that lasts more than fifteen years.

Detective Jim Scharf explains how he adapted an innovative tool from the Iraq War to create the Cold Case Playing Cards. The cards that eventually helped solved the 32-year-old case ... and why Susan Schwarz was chosen to be Queen of Hearts.

18-year-old Debra Ann Dill had just quit high school to get married to a local police officer. Dill leaves one night for a date with her fiancé, but the next morning, her body is discovered next to her car. Twelve state police investigators are assigned to the case, but after interviewing hundreds of people, the case goes cold. That is, until 15 years later when a phone call from a Connecticut prison changed everything.

Modern cold-case detectives have plenty of high-tech tools at their disposal. But their hard work may not only expose a killer; it can sometimes reveal missteps and missed opportunities in the original investigation.

In Woodbury, Minnesota, 37-year-old Sharon Bloom leaves her office at lunch and doesn't return. When her boyfriend reports her missing, Detective David Hines of the Woodbury Police Department is assigned to the case.

When Sharon Bloom goes missing, detectives try to learn as much as they can about her. Detective Ray DiPrima of the Minnesota Bureau of Criminal Apprehension describes the two sides of her character and what she had been dealing with at work.

The mother of murder victims, John and Nancy Bosco, needs to know what happened to them. In desperation she seeks out spiritual healer, Dannion Brinkley. He describes his process and how he is able to see his visions.

As the bodies of John and Nancy Bosco lie undiscovered in their bed in Montana, family members, unaware tragedy has struck, have eerie premonitions something is terribly wrong.

Gwen Frick-Grimes describes the emotional impact her daughter's murder had on her family and Gwen's own feelings of guilt for not being at home that fateful night to protect her 15-year-old.

14-year-old Lisa Steedman is right next door when Kathleen Smith is murdered in her Tempe, Arizona apartment. When a reward for information in the case is publicized, Lisa fears for her own safety.

Two weeks after Traci Todd disappears in Chicago in September 2000 FBI agent Doug Seccombe, and the Evidence Response Team, descend on her apartment to see if they can figure out what happened to Traci.

Heather talks about how her life has changed after Arturo's obsession with her as well as what her plans are for the future.

This sneak peek gives you an inside look at the new series Obsession: Dark Desires. All-new series premieres Tuesday January 14 10/9C.

In the Spring of 2003, 37-year-old single mother Karen Richardt has a chance meeting with her Brooklyn neighbor Carlito Perez. But when Karen tries to distance herself, no one could have predicted the deadly cycle of violence he would unleash.