TV Guide Investigation Discovery Monday

A college student vanishes during a morning run in Amherst, sending fear through the community; police uncover a pattern of attacks on young women.

After the murder of 28-year-old Kiara Livingston, Aurora, Colo., police uncover inconsistent witness accounts, a mysterious lover named Trey, a buried truth.

Detectives investigate the murder of 20-year-old father Joseph Douglas, shot execution style in Texas, which leads stall and rumors swirl.

In Oklahoma, a suspected drug dealer leads police on a perilous pursuit of a busy interstate. In Michigan, an officer comes under fire from a masked gunman.

When Rachael Anderson disappeared in 2010, in Moscow, Idaho, police investigate her estranged husband, but her body has never been found and 2 men are in jail.

After college co-ed Jessica O'Grady went missing one night, another woman disappears a week earlier and causes the locals to wonder if a killer is on the loose.

Alina Burroughs explores the suspicious death of Jane Rhodes, who drowned during a 1996 vacation and tries to give the victim a voice from beyond the grave.

Alina travels to the Colorado mountains to investigate the 1995 shooting death of Bruce Dodson, killed while hunting and tries to pick up a murderer's trail.

CSI Alina Burroughs travels to rural Ohio to investigate the 1988 murder of Margie Coffey, a single mom strangled and dumped in an icy creek.

Nassau County, Long Island, flips upside down when an unknown shooter murders a police officer and an innocent motorist on the Cross Island Parkway.

Darkness falls on San Antonio, Texas, with the murder of 26-year-old Army veteran, Jesse Richards, who was shot and killed at a local bus stop.

When a popular high school athlete is caught in the crossfire in New Haven, Conn., a police detective confronts a rigid code of silence in the community.

In the small fishing town of Craig, Alaska, a premiere fishing boat bursts into flames just offshore, leaving the remains of a young family and several clues.

After the Whitaker family is gunned down at their home, investigators uncover a conspiracy and one man tries to save the perpetrator from the death penalty.

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.

As young women in Northern California flock to an underground car scene called a sideshow, things go from fast and furious to deadly for a 19-year-old girl.

What starts as harmless gossip between co-workers at a cookie factory in Perry, N.Y., soon turns sour and when jealousy and ambition becomes tense.

A West Philadelphia neighborhood is left in shock when high school track star Shelie Turner disappears without a trace and then the search increases.

Behind closed doors, pride, envy, greed and lust are just the beginning of the deadly sins that take over the congregation of a church in Max Meadows, Va.

A deserted, bloody vehicle has detectives thinking murder and the investigation brings them into the world of Florida pageantry and an unlikely suspect.

Virginia firefighters respond to a house fire in Upperville where they discover the body of a local journalist who had been shot two times.

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.

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.