TV Guide Oxygen Tuesday

When a young dentist is shot and killed at her apartment complex, a trail of surveillance evidence leads Dallas detectives on a manhunt across the nation.

Two Colorado women go missing in a deadly winter storm and a daring blizzard rescue the very same night may hold clues in the search for a killer.

Investigators craft an elaborate sting operation to prevent a murder-for-hire plot when an Ohio resident is offered $50,000 to kill someone.

Faith is a way of life in a small town in Alabama, but when a resident is violently killed in his own home, rumors begin to circulate about a local pastor.

Josh Mankiewicz reports on a case in California where a mother of two went missing after telling her friends that she was afraid someone was stalking her.

A group of teenagers in a small Michigan town harbor the secrets that can reveal the location and fate of a high school student who has mysteriously vanished.

After a young father goes missing, he returns home to confess a secret and devastating affair, but when he vanishes once again, foul play is suspected.

A series of dangerous secrets are uncovered after a Colorado woman vanishes shortly after she moves in with a group of friends into a busy house.

A body is discovered in a backyard in Delaware, which unearths a bizarre family's ties to an unexpected love triangle and a murder plot.

A killing spree in Texas sets off an investigation that uncovers a sordid web of seduction and a pair of killers who were driven by greed and bloodlust.

A husband and his son are found murdered after a violent home invasion, and the search for the killer exposes an illicit romance and betrayal no one saw coming.

A preacher's wife is gunned down outside of her home in Houston, and investigators find a web of sin, sex, and a family feud with deadly consequences.

A young mother in Oklahoma gets murdered during a home invasion, and the investigation reveals a vengeful romance and a murder conspiracy.

A loving couple gets found murdered inside their home, and the investigation uncovers a forbidden romance between two young lovers.

A woman's brutal murder inside her Kentucky home triggers an investigation that reveals an underage romance fueled by obsession and rage.

A woman's body gets discovered in a town park, but the investigation into what happened reveals a tale of lust, torture, and two cases of cold-blooded murder.

A respected bookkeeper in Toronto is found dead inside his home, but the search for his killer focuses on two unexpected suspects.

Police detectives attempt to solve a murder case with a significant lack of quality evidence, including a squashed tomato and a photograph.

A missing teacher's bankcard's used, but not by her, and Texas homicide investigators hope that a shoe lace taken from the victim's home may lead to her killer.

DNA evidence produced a decade after the slaying of Mia Zapata, the lead singer for Seattle punk band the Gits, allowed to police to solve the 1993 murder.

Forensic scientists are assisted by a geology professor in their attempts to analyze dirt evidence related to a fellow university instructor who went missing.

A look at the case of Georgia dentist Barton Corbin recalls how he confessed to killing his wife and girlfriend and making their deaths look like suicides.

Police suspect that a younger co-worker's unrequited love led to a motive for the murder of a woman who was gunned down in her own driveway.

Forensic specialists investigating the case of a woman who was murdered on the beach uncover key evidence in the form of a pair of men's athletic shoes.

A 13-year old girl's missing from her CO home, and the only clue to the kidnapper's identity is three prints on a screen; two years later, a breakthrough.

Police detectives are confounded by a murder with several suspects and a mountain of conflicting evidence, but forensic evidence offers them one clue to go on.

Texas criminologist, forensic experts, and investigators combine their resources to solve the 2001 murders of Cammy Lynn Keleman and Dana Denise Feazell.

In 2004 police discover the bodies of Leslie Mazzara and Adriane Insogna of Napa, CA dead in their home, and it appeared they had died in their sleep.

A suspect who was convicted of arson and murder vehemently maintains his innocence after being sentenced to a 25-year prison term.

Police seek the assistance of a canine behavior expert when the only witnesses to the brutal murder of a woman in her home are the family dogs.

In 1998, a lawyer in Texas is found shot to death in her bed, and cameras follow along as the investigators go through the evidence.

A killer may be hiding in plain sight and searching for another victim in a South Carolina town, where investigators are determined to track down the murderer.

Questions arise surrounding a doting mother after a disturbing discovery is made in a New England town, where multiple suspects are investigated.

Keith Morrison reports on a case in which the family of a 31-year-old man demands answers to how a sudden illness could kill an otherwise healthy athlete.

Keith Morrison reports on a case in which the family of a 31-year-old man demands answers to how a sudden illness could kill an otherwise healthy athlete.

Josh Mankiewicz discusses the strange disappearance of a Colorado rancher whose friends suspect that something is off with the investigation.