TV Guide Investigation Discovery Tuesday

A reclusive mother goes missing in 2019. When her teenage daughter and the police go looking for answers, they are gaslit at every turn.

A woman weaponizes empathy, faking illnesses and tragedies across state lines. As victims unite, her pattern snaps into focus.

When detectives respond to a 911 call from a lavish Miami apartment, they uncover a bloody scene with a wildly successful social media influencer at the center.

When a young couple disappears and is discovered in a field in 1980, it takes nearly 40 years for a woman to come forward with information about the case.

A good Samaritan defends a stranger; an elderly woman does the unexpected; a frightening mom is caught on camera in a precarious situation.

Criminals target fast food restaurants; a drive-thru employee takes things too far; a disgruntled customer tries to burn down a bodega.

Customers fight in a shop; a tired police officer gets a helping hand from a civilian; an angry customer takes her frustrations out on a fast-food restaurant.

A woman has a meltdown in a local bank; a driver causes extreme property damage; a police showdown comes to an explosive end.

When 16-year-old Kathey Horn disappears one night in Traverse City, Mich., police search everywhere to find her and uncover a hidden dark world.

After 19-year-old Kenia Monge disappears from a downtown Denver nightclub, she wanders the streets without purse or phone and encounters a man with a van.

When Meredith Emerson went hiking with her dog Ella in the north Georgia mountains on New Year's Day, she mysteriously goes missing and all-out search begins.

A man's claim that his wife overdosed becomes more suspicious after a toxicology report shows an extremely high level of deadly IV drug in her system.

After the murder of a promising young cyclist in Austin, Texas, the suspect flees, spurring U.S. Marshals to launch an international manhunt.

When the body of 19-year-old Ali Kemp was found at a swimming pool in Leawood, Kan., in June 2002, her father goes on a quest to find his daughter's killer.

After 21-year-old Joel Larson is shot in 1991, two more shootings terrorize the Minneapolis gay community as they realize a killer in disguise lives among them.

When Debora Gail Moody vanished from her home in Ludowici, Ga., in December 2007, but 11 years later, a confession reveals the details.

The small-town of Higginson, Ark., only has 2 full-time police officers, but when one of them is gunned down on duty, everyone in the community wants answers.

20-year-old Christina Ross goes missing in Neenah, Wisconsin, and an unlikely resident comes forward with information that leads detectives to her love life.

A local in Algona, Iowa, stumbles upon a burning truck with the body of young mother Nicole Berte inside, investigators and her family trace her last movements.

A tip comes in from an unexpected Missouri resident that leads to the final resting ground of missing newlyweds Russell and Rebecca Porter.

Suspects arise after the stabbing of a beloved mother in her home in Tomahawk, Wis., but then another stabbing occurs the next day.

Secrets revealed about Scott Collins' life aren't enough to lead to his killer, but it's his German Shepherd who holds the key to solving his case.

When Letisha meets Phillip, his charm lures her in, but when his dark side emerges, Letisha is trapped with a monster and she manages to escape him.

Myrle Miller appears to be a sweet, loving grandmother, but beneath the facade lurks a woman driven by selfishness and greed.

After a robbery turns into an abduction, overwhelmed small town cops need Ranger Holland's help. The suspect won't give up the victim's location.

Police get a call about the bullet-riddled body and Detective Kevin Palmer turns to the victim's phone records and picks up on a devious plot.

Myrle Miller appears to be a sweet, loving grandmother, but beneath the facade lurks a woman driven by selfishness and greed.

After a robbery turns into an abduction, overwhelmed small town cops need Ranger Holland's help. The suspect won't give up the victim's location.

Police get a call about the bullet-riddled body and Detective Kevin Palmer turns to the victim's phone records and picks up on a devious plot.

When Letisha meets Phillip, his charm lures her in, but when his dark side emerges, Letisha is trapped with a monster and she manages to escape him.

When a student is assaulted and burned in her college dorm room, the victim succumbs to her injuries and the police find 2 suspects with very different stories.

When a young husband is shot dead in his home in Morris, Ala., police initially believe it's a robbery gone awry, but authorities uncover a dark secret.