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Being in love can make you feel like you're on top of the world. But what happens when that love turns cold as ice? These real-life stories of obsessions, affairs, and love triangles gone wrong show how even devoted lovers can become Cold Hearted.

A police station and a fire station adjoining each other cooperate in combating crime and fire in the most brutal and tragic cases.

When relationships go bad and one partner becomes obsessive, the gruesome fact is that, sometimes, the victim can pay the ultimate price.

These are the terrifying tales of the unwanted neighbors who turn home sweet home into home sweet hell. A look inside the lives of horrific neighborly disputes and what happens when a simple issue turns into the worst night of a family's life. Do you really know who lives next door? This true-crime series tells the chilling tales of those with the misfortune to unwittingly take up residence within a stone’s throw of a psycho or killer.

H.H. Holmes builds a three-story hotel in Chicago where he tortures and kills an untold number of people visiting the city for the 1893 World's Fair.

"The Perfect Murder" brings viewers some of the most diabolical, perplexing murder cases to land on detectives’ desks – the kind of cases that make or break careers and provide fodder for Hollywood mystery movies. These ingenious killers are every detective’s worst nightmare. Whether by planting false evidence, or writing anonymous letters to police, these murderers will stop at nothing to stay one step ahead and get away with the perfect murder. Detectives hit dead end after dead end, and wrong suspects are discarded. But one new clue can lead to another and the cold case suddenly gets hot. The truth is that it is the perfect murder -- until it's not.

The terrorist hijackings and destruction of the Twin Towers were a defining moment in human history. Nearly 3,000 people were killed, triggering the war on terror and changing the way we live today. Rescue workers, survivors and witnesses relive the traumatic events of 9/11, some telling their story for the first time.

Southern Fried Homicide probes the juiciest stories from down in the Bible Belt. Classic true crime is served up against a backdrop of Southern hospitality, etiquette and Christian values. Good ol' morals give way to cold-blooded murder in these grim tales of love gone wrong, business deals turned sour, families divided, and more.

Doctors recount the most memorable cases they’ve ever encountered. Unusual, touching, humorous or life-changing – no story is too big or too small when it comes to the ER.

A compelling, innovative true crime series focused on the role of forensic science in solving some of the most perplexing crimes of our time. Looking at how examination of DNA, teeth, and insects, among other things, can be used to solve crimes.

The show features accounts of individuals and groups caught in dangerous scenarios, presented both through interviews and dramatic reenactments. The main focus is how the survivors survived and the decisions they made that kept them alive.

Rescue 911 is an informational reality-based television series that premiered on April 18, 1989 and ended on August 27, 1996. The series was hosted by William Shatner and featured reenactments of emergency situations that often involved calls to 911. Though never intended as a teaching tool, various viewers used the knowledge they obtained watching the show. Two specials, titled "100 Lives Saved" and "200 Lives Saved," were dedicated to viewers who had written to CBS with their stories on how the knowledge they obtained watching the show allowed them to save the life of someone else. At least 350 lives have been saved as a result of what viewers learned from watching it.

Honoring service members whose courage merited the awarding of a Medal of Honor, this docudrama series re-creates their inspiring true stories.

The docuseries follows people deeply involved in the group NXIVM — which is faced with various charges, including sex trafficking and racketeering conspiracy — over the course of several years.

The First 48 follows detectives from around the country during these first critical hours as they race against time to find the suspect. Gritty and fast-paced, it takes viewers behind the scenes of real-life investigations with unprecedented access to crime scenes, autopsies, forensic processing, and interrogations.

These are the true stories of the innocent and the unimaginable. Based on true events, A Haunting dramatises some of the scariest stories, revealing a world in which tragedy, suicide and murder have left psychic impressions so powerful that innocent people become forced to deal with them decades later. Through mesmerizing first-person accounts, the mystery and origin of each haunting is powerfully revealed and leaves a lingering sense that life—and death—are much stronger then anyone could have possibly imagined.

Paranormal encounters from the viewpoint of those who lived them are detailed through immersive reenactments and present-day interviews.

Real people sit down with friends and family to share terrifying true stories from their past, re-created through chilling re-enactments.

In a docuseries set at one of NCAA football's most fertile recruiting grounds, guys with red flags seek to prove their worth on the field and in class.

Monsters can be found lurking behind any innocent smile and on any street corner in America. Never-before-seen-video footage stares straight into the eyes of these killers who hide in plain sight. Anyone can be a monster.