Investigation Discovery TV Guide — Monday TV Listings & Schedule

Browse the full Investigation Discovery TV guide for Monday, 21 September 2026. 24 programmes listed , including 6 tonight. US listings updated daily — scroll down to tonight's highlights or use the day tabs above to browse the weekly schedule.

Early Morning

00:00 1h

Your Worst Nightmare

S5 · E2 · Play Dead Drama

Play Dead

30-year-old single mother Kaye Robinson, turns a suspicious late-night stranger away from her door, not knowing that the threat to her family is far from over.
01:00 1h

Signs of a Psychopath

S6 · E9 · I Had Everybody Fooled Other

I Had Everybody Fooled

When a mother, covered in blood and holding a barely breathing newborn, arrives at the hospital, medical staff uncover a faked birth.
02:00 1h

Toxic

S2 · E1 · Don't Go Home True

Don't Go Home

Jenn Holman fell hard for Jesse Winnick; magnetic, dangerous and impossible to leave. One phone call reveals how close she comes to becoming his next victim.
03:00 1h

Your Worst Nightmare

S5 · E2 · Play Dead Drama

Play Dead

30-year-old single mother Kaye Robinson, turns a suspicious late-night stranger away from her door, not knowing that the threat to her family is far from over.
04:00 1h

Evil Lives Here

S9 · E23 · I Know Who the Real Monster is Documentary

I Know Who the Real Monster is

When Ryan's mother marries Blaine Nelson, he hopes he'll gain a fun-loving stepdad but instead, all he gets is chaos, pain and fear.
05:00 1h

Evil Lives Here

S3 · E13 · I Invited Him In Documentary

I Invited Him In

Jill Garrison of Wallkill, N.Y., never knew that she had let a killer into her life who was responsible for the deaths of six people including her close friend.

Morning

06:00 1h

Evil Lives Here

S3 · E8 · The Cop and the Killer Documentary

The Cop and the Killer

When Walt Chavis joins the police force, he gets thrust into a nightmarish scenario in which he must choose between his murderous brother and his duty.
07:00 1h

The 1980s: The Deadliest Decade

S1 · E1 · The Yuppie Murder Documentary

The Yuppie Murder

A man survives to detail the attacker that shot his girlfriend and their unborn child to death, but an unexpected witness provides a breakthrough in the case.
08:00 1h

The 1980s: The Deadliest Decade

S1 · E2 · The Preppy Murder Documentary

The Preppy Murder

When a beloved prep school student is arrested for strangling a teenage girl, his defense claims that the death accidentally occurred during "rough sex."
09:00 1h

The 1980s: The Deadliest Decade

S1 · E4 · The Heartland Massacre True

The Heartland Massacre

In the midst of America's farm crisis during the 1980s, a mass murder in a Missouri farm town kills an entire family and the unlikely suspect is a teenage boy.
10:00 1h

People Magazine Investigates

S3 · E13 · The Sound of Silence True

The Sound of Silence

When two deaf Gallaudet University students are murdered in their rooms four months apart, Washington, D.C., police investigate a possible connection.
11:00 1h

People Magazine Investigates

S3 · E6 · Murder on Newberry St. True

Murder on Newberry St.

The case of the deaths of an African-American mother and a young, white police officer are killed during the July 1969 race riots in York, Pa., are reopened.

Daytime

12:00 1h

People Magazine Investigates

S3 · E5 · Fatal Family Secrets True

Fatal Family Secrets

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.
13:00 1h

People Magazine Investigates

S3 · E6 · Murder Among Friends True

Murder Among Friends

On August 8, 1980, a high school student went to go jogging in her hometown in Maine, but she never returned, days later, her beaten body was found.
14:00 1h

Betrayed

Unholy Alliances True

Unholy Alliances

When a church secretary goes missing and turns up dead, police explore if she was killed by a jealous new internet date, or somebody she has known for years.
15:00 1h

Betrayed

S4 · E8 · The Predator of Pleasant View True

The Predator of Pleasant View

While 23-year-old Suzy Goulart was trying to get by, but a little drama between friends and lovers soon add up to her murder on April 16, 2005.
16:00 1h

Betrayed

S4 · E5 · Killing with Kindness True

Killing with Kindness

Cashier Elizabeth Grosskopf takes in human strays like puppies until one wants more than just food and shelter, but also her life.
17:00 1h

Obsession: Dark Desires

S5 · E6 · Can't Let Go Drama

Can't Let Go

When an 18-year-old girl falls in love with a man nearly 15 years her senior, her parents warn against it, but no one could predict the danger she is in.

Evening

18:00 1h

Obsession: Dark Desires

S5 · E3 · Friend Request Drama

Friend Request

When single mom Rosita accepts a stranger's friend request, she has no idea he's hiding a terrifying secret that will lead to a deadly game of cat and mouse.
19:00 1h

Obsession: Dark Desires

S5 · E4 · Cabin in the Woods Drama

Cabin in the Woods

A woman never expected such extreme reprisals from a man she once called her partner, but her daughter is caught in the crosshairs.
20:00 1h

Obsession: Dark Desires

S5 · E2 · The Stalker's Imagination Drama

The Stalker's Imagination

When Katerina leaves her husband, he fights back in imaginative ways to cause her pain, including getting Katerina locked up for a crime she hasn't committed.
21:00 1h

Fatal Vows

S7 · E4 · Hell on Wheels Documentary

Hell on Wheels

One after another, Josh Niles, Jace Childers, Tim Dean and Casey Miller all go a little crazy vying for the love of the passionate & beautiful Charlene Albert.
22:00 1h

Married to Evil

S1 · E3 · The Devil of Denver Documentary

The Devil of Denver

After Stacy Malman & Robert Feldman fall in love, life becomes a living hell and the couple must confront the truth that triggers a series of horrific events.
23:00 1h

Married to Evil

Documentary

Featuring true stories that explores the wickedness behind the wedding, with exclusive interviews and never-before-told accounts of the events.

Early Morning

Morning

Daytime

Evening

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