Investigation Discovery

Takes a deep dive into the stories of unforgettable murders from the streets of Philadelphia. Told through the eyes of veteran homicide detectives, local reporters and the victim's families who have lost so much, these are the cases they will never forget.

The Killer Beside Me exposes the dark underbelly of workplace evil where rivalry, romance, and the abuse of power culminate in a brutal slaying. Each episode in this series retells the shocking events leading to a horrific murder. How well do we really know our co-workers?

Spine-tingling crimes that take viewers on a ride of twists and turns, complete with jump-out-of-their-seats moments and chilling conclusions. This show uses classic suspense film techniques to follow some of the creepiest, most harrowing crimes ever committed, as these victims' darkest dreams become unfathomable realities.

Samuel Little may not be the first name that comes to mind when thinking of serial killers, but he is one of the most prolific and elusive of all time. He was convicted of murdering four women but is thought to have killed as many as 93 women over four decades. For the first time ever, viewers will have exclusive access to investigators, stories from families and chillingly detailed descriptions from Samuel Little himself.

Detectives recall the career-defining cases that still keep them up at night, from mysterious disappearances to twisted family murders.

Solving a murder is like putting together a giant jigsaw puzzle. Sometimes, the pieces snap into place with ease and other times, they don't fit. The police must meticulously reconstruct the puzzle. Once all the pieces are found, investigators must then figure out how everything fits together, crack the case and bring justice for the victim.

Revisits heart-pounding cases of deception that ended in murder at the hands of a trusted family member, co-worker, lover, or friend. Told through the lens of the fictionalized, first-person perspectives of the victims, the viewer is treated like the only confidant they have left.

The South can be as shadowy as the muddy waters that run through it, especially when it comes to crime. This true crime docuseries is an exploration of the duplicitous characters, unique settings and boundless mysteries of the American South.

In the three-hour special, investigative journalist Diane Dimond explores whether the billionaire’s death was really a suicide or part of a far more sinister cover-up at the hands of a powerful friend with something to hide.

How do you find the strength to go on after witnessing a loved one's tragic murder? Unbreakable: Live to Tell follows extraordinary survivors from every heart-skipping beat of the attack to the odds-defying recovery that led to their new "normal."

Like trying to decipher the value of a book without ever opening it, judging a person by his or her outward appearance can be a mistake. Someone may look perfect on the outside, but even the most kind-hearted soul has a dark side looming. "Diabolical" is a docuseries that delves into the minds of murderers, asking a simple question: "Why did they do it?" The acts were committed with extreme premeditation -- many were months or even years in the making. Tension builds in each episode as law enforcement taps into the methods of devious masterminds, aided by insights from forensic psychologists and psychiatrists as well as criminal profilers.

Investigators piece together murder mysteries and seek insight into the victims' lives - and sometimes into their darkest secrets.

Channeling sibling rivalries and deadly childhood pacts, this series follows true-crime mysteries surrounding cases of these double-duty archetypes.

When marriages fall apart, divorce can turn ugly - even deadly. From blushing brides turned cold-blooded killers to smitten grooms with shocking dark sides, the criminal psychology behind deadly divorces is examined. Guiding viewers through actual stories of love gone wrong are psychotherapist Stacy Kaiser and forensic psychologist Dr. Brian Russell, who analyze each couple to better understand how the marriage turned from flawed to fatal. .

Lake Erie is home to some of North America’s darkest and deadliest murder cases. Dive deep into its most notorious mysteries and hear insight from the detectives working on the frontline of these shocking investigations.

In 1993, three teenagers were believed to be responsible for the brutal murder of three eight-year-old boys in West Memphis, Arkansas. Experts delve deep inside the investigation of this triple homicide, exploring the evidence and possible motives.

A look at those left in the wake of a murder as they dig for the truth among the unexpected and unnerving secrets of the murdered loved ones.

Follow investigators as they dissect complicated relationships between spouses, friends and family members to answer the question: Who felt a love so strong it drove them to kill?

Using the urgency and intimacy of local news footage, the stories of murder investigations that turned small towns and communities upside down are recounted.

Haunting true tales of murder set in the cruelest conditions. Featuring raw, emotional first-person interviews with family and investigators, each chilling episode explores what happens when detectives must track down a killer, all while battling the unforgiving elements.