TV Guide Oxygen Sunday

A gruesome discovery is made at a construction site when a man is found buried beneath a newly installed septic tank.

When police respond to a domestic disturbance in a Bay Area suburb, it's unclear who on scene was the intended victim.

A horse trainer who's expecting a baby vanishes and the police go looking for him only to realize that a salacious secret may have led to the victim's demise.

An African immigrant found tortured and murdered leads Atlanta detectives to a string of violent crimes tied to a terrifying criminal syndicate.

An investigation is launched into mysterious deaths at a traveling commune as a pair of sisters, former members of the community, share their secrets.

Emily makes a horrific discovery in Angel's Landing, where the commune is left in shock as they struggle to move on with their lives.

Josh Mankiewicz reports the story of an actress Aasha Davis and her sister Leslie, who lived a charmed life in Hollywood, until one of them is reported missing.

Someone gets killed at a Halloween party in a bar, and the night proves difficult for the investigators when they learn all of the suspects were in costume.

A popular school superintendent is found dead in his New York home, and the investigators go on a search for answers about what happened.

Nine years after she stabbed her foster mother to death, a young woman shares her story from prison as she details how her foster father convinced her to kill.

Convicted murderer Teresa Kotomski opens up about her rocky marriage and shares details about what could have caused her husband's agonizing death.

After a retired nuclear physicist is reported missing, investigators uncover a life of reclusive paranoia, behavior they believe may not be entirely unfounded.

After a general store owner in Rusk, Texas makes a confession over 911, investigators uncover a pattern that makes them rethink the suspect's motivation.

Detective work quickly to find the murderer of a young Texas woman whose body is found beaten and bound inside a burned-down apartment building.

When a beloved mother goes missing on her birthday, investigators zero in on a co-worker will do whatever it takes to protect their identity.

Detectives pick up a foul trail after a man's complicated past catches up to him when he's found shot to death at a Missouri roadside park.

When police receive a lead in a missing persons case that leads them to a 115-acre farm, they are greeted with a murder scene that would go down in history.

A grisly crime scene and toxic love triangle is exposed when a beloved father agrees to reconcile with his ex-wife and can't be reached.

A frantic 911 call captures a man's final moments after a brutal knife attack in his home, but their only eyewitness keeps changing her story.

When a retired Dauphin County sheriff is found burned to death, investigators must determine whether the death was due to a mental health crisis or murder.

A San Diego teacher and coach is gunned down on the street; detectives swiftly retrace the suspect's steps to unveil a sick, obsession-fueled murder plot.

A family must deal with the sudden loss of a cherished father after a house fire, but the investigation unravels a scheme exposing fraud, infidelity and greed.

When a retired Dauphin County sheriff is found burned to death, investigators must determine whether the death was due to a mental health crisis or murder.

A San Diego teacher and coach is gunned down on the street; detectives swiftly retrace the suspect's steps to unveil a sick, obsession-fueled murder plot.

The police originally began searching for a loving family that disappeared until they're placed on a hunt for ruthless killers driven by hate and revenge.

The case of a professional basketball player goes cold for nearly a decade after he was gunned down in his hometown, until the murder weapon is recovered.

A family matriarch strangely disappears two years after a cherished father is shot by mistake in his home starting a second investigation that reveals a secret.

After receiving a 911 call, the police find the bodies of a mother and daughter murder-suicide, but they soon discover a trail that leads to the real killer.

Authorities investigate a shooting crime in which a mother was shot at point-blank range to determine if the shooting was a random event or a murder attempt.

Authorities investigate a shooting crime in which a mother was shot at point-blank range to determine if the shooting was a random event or a murder attempt.