TV Guide Investigation Discovery Monday

In Montana, firefighters battle a blaze and discover Norman Leighton and Patti Hubert bound and gagged. They find the home ransacked with little missing.

In Fayetteville, Ark., 47-year-old Mario Miller turns up shot dead in a stranger's driveway. As detectives trace his last hours, a missing Dodge Challenger.

After Ranger James Holland receives a phone call from the Pennsylvania State Police, he finds himself face-to-face with a witness.

A car chase ends dramatically with lasting consequences for a lieutenant, and a lone officer must keep her cool to safely detain a homicide suspect.

After children find the body of a young woman, forensic experts decipher animal hair fibers and DNA evidence, which puts them on the trail of a predator.

When a single father is found dead in his burning home, an autopsy reveals the fire didn't kill him, as investigators must decode clues to reveal the killer.

When James Montgomery enters Donna Andersen's life, the future looks bright, until Donna makes a discovery that turns her marriage into a living nightmare.

When Butch Halley finds love with charming Sunny, he can't wait to start their new life together, but sinister rumors soon threaten to tear the family apart.

A dark accusation tears Deborah Jones and Gerard Pepin's marriage apart, but then Deborah decides to fight to bring him to justice, whatever the personal cost.

When Melanie marries James Addie, she's unaware that he will lead a double life one day, but James' secret is in danger of being exposed.

Las Vegas teen Wendy Mazaros survives sex trafficking & marries her older boss, Tom Hanley, only to discover he is involved with the mob and might be a hitman.

After a woman is engaged to a doctor, his secret life finally comes to light and she discovers he is one of the worst sexual predators in history.

When single mother Linda Damm goes missing in Lafayette, Colo., police get a tip from an anonymous caller telling them where to find her body.

Michael and Elizabeth marry within a year of meeting, but their forever is cut short when Michael's body turns up one morning at the local golf course.

When a man's childhood friend moves to town, he offers to let him stay with the family and soon a sinister seduction occurs, leading to a cold-blooded murder.

A former police chief who owns most of the homes on his street gets into constant conflict with a young renter who doesn't respect his authority.

A former cop moves into a close-knit neighborhood and soon, the entire community erupts over dogs, noise and other disturbances that heat up until boiling over.

Complaints about dogs running loose lead to the construction of a fence between two long-time neighbors, but the problem isn't solved.

A contractor helps his neighbor rent the home beside him on a cul-de-sac, unwittingly trapping himself, and it's a conflict that will end in bloodshed.

A handyman who lives rent-free in the home of a friend, grows increasingly paranoid about his neighbors, and then conflict escalates out of control.

When someone snatches 9-year-old Jessie from her bed in the middle of the night, the authorities scour the area looking for her when they discover a dark truth.

In 2001, someone murders a father, setting his Florida home ablaze, and his sons disappear and hopes rise for their safe return.

A celebrity facialist spirals after online attacks and stalking she believes are by a rival, and her supposed tormentors turn out to be friends.

Joel Frazier of Dalhart, Texas, is the father of two former rodeo queens, Camie and Jamie, but suddenly he goes missing in 2017 and the town rumor mill is busy.

In 2001, someone murders a father, setting his Florida home ablaze, and his sons disappear and hopes rise for their safe return.

A celebrity facialist spirals after online attacks and stalking she believes are by a rival, and her supposed tormentors turn out to be friends.

Joel Frazier of Dalhart, Texas, is the father of two former rodeo queens, Camie and Jamie, but suddenly he goes missing in 2017 and the town rumor mill is busy.

Detectives investigate to unravel the mystery when a six-year-old beauty queen is found murdered inside of her family's home in Boulder, Colo.

Catherine Cousins pursues a scandalous affair with family man Tim Koile and plotted to get rid of her husband Sean and cash in on his life insurance policy.

When police find a dying man lying in a field in Delaware, he accuses acquaintance George Kalomeris of stealing thousands of dollars from him and shooting him.