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The shooting of a football coach inside a high school triggers a lockdown in the middle of a school day. Police race to track down an active shooter.

A cop reopens a decades-old case of a woman shot dead in her bed. It was initially ruled as suicide, until modern forensics and new witnesses emerge.

Officers confront a knife-wielding suspect. In Florida, a man who flees into the woods is outsmarted by a K9 officer and in Indiana, a gunman wages war on police.

Two brothers seek justice for their parents' death in a drunk-driving accident. In a retrial, a defendant's brother testify against him for possible a death penalty.

After a string of bad dates, Deborah Houchin believes she's finally found the man of her dreams. But not long after talk turns to marriage, she mysteriously vanishes.

When Jenae Aragosa falls hard for Trevor Frederick, a dark side to her new man comes to light. Soon, he makes it clear that if he can't have her, no one can.

A group of girls begin lifelong friendships at church camp. Life takes them down different roads and their bonds remain until one of them disappears.

Princess. When a Homecoming Queen and a Dairy Princess are murdered in Marathon County, Wisconsin, detectives question a pool of suspects, from strangers to frenemies.

A real estate agent gives in to his wife's wish that her mother moves into their home. But what begins as a compassionate gesture turns into a bitter war of wills.

Everyone wants a part of Ken Germain's property business, including partner, Colin Collea. But tensions rise as employees begin to suspect it's just a scam.

When Leesa Nascimento is killed by a shot in the head, a recently sacked co-worker, is traced after evidence is found that ties him to the murder.

A lunch break becomes a nightmare for two secretaries who vanish in broad daylight. One woman is found dead, launching a desperate search for her missing friend.

Two young women vanish after venturing out alone at night. Can clues that come from behind bars help solve the mysteries that surround these disappearances.

Who Pulled The Trigger? The dreams of a promising young athlete come to an end when he is found shot to death. His family begin a relentless hunt for justice.

New details suggest Andrea had some serious personal struggles before she vanished, leading many to wonder if this new layer could hold the key to finding her.

A new and even more shocking theory emerges from those finally ready to speak, leading everyone to wonder if the real danger was in front of them all along.

The body of 20-year-old transgender female, CeCe Dove, is found floating in a suburban pond near her Cleveland home. Are the motives personal and primal.

Merritt's phone pings near the desert graves. Prosecutors suggest he tried to delete financial records to cover his tracks. A lawyer suddenly leaves the trial.

Rogelio Morales sweeps Margarita Sanchez Lemus off her feet. Behind Rogelio's winning smile lurks a monster who will soon show his true colours.

Five-year-old Audrey witnesses her mother, Diane, brutally stabbed to death. To Audrey's horror, her mother's murderer is somebody very close to home.

Actor Robert Blake finds his wife, Bonny Lee Bakely, dead in the couple's car. The police investigation history uncovers a story of ambition and betrayal.

A radio station intern is murdered, launching a long and frustrating investigation. Eventually, forensic genealogy leads to a man on the run for decades.

When Lisa Carlson is found killed in her home, it's thought that robbers surprised her during an intimate moment and killed her. But the scene was staged.

Fontana unearths Hannibal's secrets and confronts a suspect in the case who seems to be dangerous.

In 2001, a welfare check reveals a woman brutally murdered in the basement of her home. The hunt for her killer leads to a mystery buried for over 14 years.

He Saved Her Life, Then Took It. Betty sees a dark side in her nephew, Chance. He explodes in a fit of rage and harms the one person who cares for him most in the world.

Robert Marshall loves his money and his mistress. But when his wife hires a Private Detective to catch him in the act, who will pay.

Mary and John are living the American dream, until they get wrapped up in the dangerous game of couple's roulette. Later, a love affair takes a murderous turn.

When a hardworking mum is shot dead on a sidewalk in 2005, police worked tirelessly to catch the killer. With a murderer on the loose, it was a race against time.

A skeleton is discovered on the edge of a high school football field. It takes a forensic sculptor and tireless detective work to finally bring the killer to justice.

Family and friends are concerned when Phillip Brewer and Jody Fortuna go missing from Gillette, Wyoming. Eventually, the horrifying truth comes to light.

Locals stay quiet to protect their own when a new resident of Hartford, Kentucky, is found tied up and floating in a toolbox in a creek. What happened.

A lunch break becomes a nightmare for two secretaries who vanish in broad daylight. One woman is found dead, launching a desperate search for her missing friend.

It is love at first sight for Michelle and Dennis. But soon, the dark past of Michelle's new husband rears its ugly head and ends in a double homicide.

A woman enters into an affair with her daughter's grandfather, causing a major rift in the family and eventually leading to a bloody Texas showdown.

When Jeff Silvernail finds his partner dead at home, it appears a burglary gone wrong. But police soon uncover it is, in fact, the ultimate betrayal.

In June 2003, a five-year-old girl vanishes as she walks to a friend's house. As police investigate, they realise the community is hiding some disturbing secrets.

When mother-to-be Jenny Webb doesn't come home her loved ones are worried. Later that night, their fears are confirmed when she's found dead.

When a hardworking trucker is shot dead in his truck, detectives are left with few clues to find his killer. Two years later, a confession cracks the case.

On the night of her son's wedding, Christy is found dead. As they investigate, police uncover a dangerous marriage and a violent monster.

When two people are murdered, a teenage boy is arrested and pleads guilty. For 24 years one woman believes he is innocent, but once released his true nature surfaces.

Paige Birgfeld is the ultimate multi-tasker, balancing family and jobs. But beneath the façade, she is hiding a dark secret that will lead to the ultimate betrayal.

In 2013, police arrive at a devastating scene. At first, it appears to be a tragic accident, but police soon uncover a story of infidelity and obsession.

A shooting in a luxury building sends shockwaves through an upscale neighbourhood. Detectives uncover a list of suspects and a plot born out of economic envy.

Workouts turn a group of fitness fanatics into bitter rivals. As the competition heats up, it's not just buff bodies and tight abs on the line.

After Charlotte Brown died in a speedboat accident, the vessel's owner claimed he was innocent. Experts reveal the full extent of Jack Shepherd's deception.

Former prosecutor Sunny Hostin re-examines the premeditated murder of 23-year-old mother Danielle Marshall. Who was the killer and how were they caught.