TV Guide Oxygen Tuesday

A Tennessee woman lets tensions with her estranged husband get out of hand and, as her children watch, shoots him the head in the hopes of ending his life.

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

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.

After a hospital employee mysteriously dies, the police find surveillance footage of a suspected serial killer rumored to be connected to many unsolved crimes.

A determined father seeks justice for his murdered daughter after her official murder case turned up no results, even though the police questioned two men.

Prosecutors rely on child witnesses to build a murder case after discovering that two young children saw their mother being brutally killed.

As authorities investigate a teenager's suicide, they examine a series of text messages and question the suicide victim's confidant.

A woman is found dead in an elevator and Barbara retraces the chain of evidence and she uncovers a domino effect of violence that leaves a trail of bodies.

When a body surfaces in the icy East River, Barbara joins detectives in a race to reconstruct the victim's identity using the few fragile clues left behind.

Residents of a Las Vegas neighborhood are shaken by the murder of a mother and daughter.

When a garbage bag containing a young woman's body is dumped in a NYC tunnel, Barbara Butcher unravels a seemingly straightforward crime.

Barbara Butcher investigates a murder, where the motive festers across generations before exploding into violence.

A cherished grandmother is found murdered in her Bronx apartment; Barbara Butcher decodes how the victim's body holds clues to a carefully hidden motive.

Barbara Butcher steps back into the 1997 murder of Jonathan Levin, a beloved Bronx teacher, and reveals how her Death Investigation withstood intense scrutiny.

A missing man's search ends with the discovery of his body inside his own car; the brutality is unmistakable, and to Barbara Butcher, so is the staging.

When suitcases of dismembered remains wash ashore, the investigation leads back to New Jersey, where a facade of a perfect family man breaks to reveal reality.

When a fearless Las Vegas journalist is ambushed outside his home, the surveillance video shocks the city, but the body tells a deeper story.

In April 2010, a determined young woman on a mission to work things out with her ex-boyfriend ends up shooting him to death instead.

In a desperate effort to take her lover's wife out of the picture for good, a Houston mistress attempts to end the woman's life by shooting her in the stomach.

A well-cleaned crime scene impedes police officers' efforts to investigate when a middle-aged woman disappears from her apartment complex.

A couple disappears from their rented condo on Memorial Day Weekend, leaving behind possessions including their car but no evidence of the vanishing.

After a daughter is beaten and her mother is stabbed to death, police must wait 15 years until DNA technology helps finally bring the culprit to justice.

When remains of a waitress's body are investigated by the detectives, they analyze fingerprint & DNA evidence to determine the details surrounding her murder.

An exotic dancer's disappearance leads to the discovery of a site where someone was creamated; DNA analysis leads to identification of the victim.

Investigators must determine if a man's death was an accident or a murder after the truck he is working on falls off of the hydraulic jack lifting it.

A man is questioned about the death of his wife after her body is found in his parents' house with signs of a home invasion, but there is conflicting evidence.

A man is killed over a period of days and his wife, whose first husband died young, claims suicide and refuses to allow an autopsy.

The discovery of a dismembered body on the side of the New Jersey turnpike marks the start of a hunt for a serial killer targeting Manhattan's gay community.

After a woman is killed and her unfaithful fiance becomes the prime suspect, a man comes forward claiming to own the murder weapon and know who used it as well.

When a rebellious teenager disappears, a search turns up clues that lead investigators on a hunt for a killer, and forensic evidence will reveal the truth.

While vacationing in Florida, a mother and her two daughters disappear and are later found dead in Tampa Bay, leaving no evidence behind until five years later.

When four teenagers are murdered in an otherwise peaceful suburban town, their killings go unsolved for three years until a composite sketch sparks new leads.

After a young college student's death is ruled a homicide, police immediately suspect the victim's boyfriend, but DNA points them in a different direction.

Despite a man's claim to have accidentally shot himself, authorities uncover a different story at a crime scene, where a love triangle is beginning to unfold.

Authorities believe a relapse into drugs is the cause behind a mother's disappearance, but her family and friends suspect foul play.

Officers investigate after armed intruders break into a family's home, and they discover that someone in the family was hiding a secret.

Officers investigate after armed intruders break into a family's home, and they discover that someone in the family was hiding a secret.