Investigation Discovery HD (Pacific)

A vibrant and inspiring group from Denver's creative community spreads messages of love and inclusion, attracting many online followers; soon they become the target of a hateful and violent member of the online manosphere with shocking consequences.

A celebrity overdose makes headlines but revered professionals behind the scenes often go unnoticed; misbehaving doctors and the multi-million-dollar drug empire are under the microscope.

A vibrant and inspiring group from Denver's creative community spreads messages of love and inclusion, attracting many online followers; soon they become the target of a hateful and violent member of the online manosphere with shocking consequences.

When a young woman goes missing, a rookie police officer's intuition leads to an intense investigation, as they race against the clock to find her.

Hikers discover the severed head of Hervey Medellín in the Hollywood Hills; the suspects include former lovers, drug cartel hit men and a porn star in this tale of lust, greed and butchery.

Six-year-old beauty queen JonBenét Ramsey is found murdered in her Boulder, Colo., home in 1996, and investigators try to determine whether she was killed by an intruder or by a member of her own family.

On a snowy Wisconsin morning, a young mother is found beaten, stabbed and strangled to death with her 3-month-old son as the only witness; the chase for a suspect leads detectives to a vicious killer who's close to home.

A family vanishes in the dead of winter, and Nebraska police must determine whether the family has decided to leave town or fallen victim to foul play; a daughter's search helps investigators uncover a sinister plot fueled by revenge and greed.

A brutal murder and frozen crime scene shatter the peace in an idyllic Idaho town, then a suspect's bizarre confession leads police to believe the murder case will be solved soon, but all is not what it seems.

The Necktie Killer strikes fear in the hearts of Atlanta's citizens; detectives from neighboring counties piece together correlative clues and distinctive apparel left behind at each crime scene.

Dallas has its dark side, but nothing compares the horror of a series of women found murdered with their eyeballs surgically removed; a pair of beat cops use their street savvy to lead detectives to a sadistic killer and his bizarre motive.

In Orange County, Calif., four men are stabbed by a mystery man in a month's time; no one makes a connection to the gruesome double murder of a woman and her son two months earlier except the man sitting in prison for killing his own family.

In mid-90s Miami, a crew of bodybuilders known as the Sun Gym Gang preys on the rich to rob them blind; as their greed grows, they turn to murder, resulting in one of the goriest crime scenes in Florida history.

In mid-90s Miami, a crew of bodybuilders known as the Sun Gym Gang preys on the rich to rob them blind; as their greed grows, they turn to murder, resulting in one of the goriest crime scenes in Florida history.

The only thing scarier than a serial killer is one hiding in plain sight.

The only thing scarier than a serial killer is one hiding in plain sight.

When being interviewed by police, psychopaths often use manipulation to thwart the investigation; experts explore the anatomy of the key manipulative tactics of psychopaths and how they try to utilize them for their own sinister gain.

An early morning fire inside an apartment complex soon reveals something worse, the dead bodies of a young woman and an infant boy; detectives find a psychopath who appears polite and gentle, then later as a pawn of imagined demons.

Police catch a break on three cold case murders when emerging DNA technology makes a stunning match, a 73-year-old man who's been in prison since 1993; detectives interrogate the frail man whose harmless façade is hiding a murderous psychopath.

When a young mother goes missing, her husband joins the search; police discover her dismembered body in a stack of bins; detectives find her husband to be a typical suburban dad, but learn a murderous psychopath lurks within.

Terror rocks an Ohio town when a mother, her two kids and a close friend vanish; investigators track down the prime suspect and uncover a house of horrors; detectives find themselves dealing with a psychopath with a bizarre obsession.

A vehicle plows down a 75-year-old military veteran on a country road in an apparent hit-and-run; when a young man confesses to the crime, detectives quickly learn they've encountered a psychopath with an intense desire to thrill kill.

After the shooting deaths of father, mother, and two adolescent boys in their suburban Baltimore home, investigators realize it's not a robbery gone wrong but rather the execution of a loving family, done by a callous psychopathic killer.

William Cosden Jr. coerced his much younger sisters, Karen and Susan, into keeping secrets about what he did; now the girls are adults, and with one facing death, they reunite to try to repair the trauma keeping those secrets caused them.

Not every mother and father raise the child of their dreams, as some children grow up to become killers; through heart-stopping stories, parents must come face to face with the horrible truth that the child they loved and trusted is a monster.