Browse the full Investigation Discovery TV guide for Wednesday, 21 October 2026. 27 programmes listed , including 7 tonight. UK listings updated daily — scroll down to tonight's highlights or use the day tabs above to browse the weekly schedule.
Early Morning
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00:00 1h
The Curious Case Of...
S1 · E6 · The Doomsday Cat Cult - Part 2Self-styled prophet Sheryl Ruthven manipulates followers to revere catsSelf-styled prophet Sheryl Ruthven manipulates followers to revere cats, driving them into isolation, financial ruin, and destructive rituals -
01:00 1h
The Curious Case Of...
S1 · E7 · The Funeral Home of HorrorsA funeral home promises eco-friendly care but buries dark secretsReturn To Nature funeral home promises eco-friendly care but buries dark secrets, leaves bodies to rot and gives families concrete instead of ashes -
02:00 1h
Twisted Sisters
S3 · E1 · Smoky Mountain MurderA custody battle that turned deadlyA custody battle that turned deadly as twin sisters crafted a complicated, cross-country conspiracy to 'do-in' the one person standing in their way. The children, meanwhile, witnessed the plan -
03:00 1h
Twisted Sisters
S3 · E2 · Her Own MedicineA case in which two tight-knit sisters fell out over an inheritanceA case in which two tight-knit sisters fell out over an inheritance from their mother. Years later, one of the sisters died a painful and mysterious death -
04:00 1h
Mean Girl Murders
S2 · E8 · Hot Yoga & Cold BloodA shooting in a luxury building sends shockwaves through a neighbourhood.A shooting in a luxury building sends shockwaves through an upscale neighbourhood. Detectives uncover a list of suspects and a plot born out of economic envy. -
05:00 1h
Mean Girl Murders
S2 · E4 · Straight A-KillerTwo of the best and brightest compete for more than just grades.In Warren, Michigan, two of the best and brightest, Danyna Gibson and Tanaya Lewis, compete for more than just grades and the results turn deadly.
Morning
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06:00 30m
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06:30 30m
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07:00 30m
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07:30 30m
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08:00 1h
Twisted Sisters
S3 · E1 · Smoky Mountain MurderA custody battle that turned deadlyA custody battle that turned deadly as twin sisters crafted a complicated, cross-country conspiracy to 'do-in' the one person standing in their way. The children, meanwhile, witnessed the plan -
09:00 1h
Twisted Sisters
S3 · E2 · Her Own MedicineA case in which two tight-knit sisters fell out over an inheritanceA case in which two tight-knit sisters fell out over an inheritance from their mother. Years later, one of the sisters died a painful and mysterious death -
10:00 1h
Twisted Sisters
S3 · E3 · The Old River RoadTwo sisters who plotted a murder togetherSisters Janice and Betty plotted a murder and its cover-up. Their plan had a fatal flaw however, as they left the victim lying by the side of the road -
11:00 1h
Twisted Sisters
S3 · E6 · Cold As IceHow a family move created an environment perfect for murderHow a family's search for new beginnings backfired when their moving back and forth from Hawaii to Alaska created an environment perfect for murder
Daytime
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12:00 1h
Mean Girl Murders
S2 · E8 · Hot Yoga & Cold BloodA shooting in a luxury building sends shockwaves through a neighbourhood.A shooting in a luxury building sends shockwaves through an upscale neighbourhood. Detectives uncover a list of suspects and a plot born out of economic envy. -
13:00 1h
American Monster
S6 · E2 · Plus-OneA Michigan mother murdered by her jealous ex-boyfriendA Michigan mother murdered by her jealous ex-boyfriend. Friends and family examine home video footage and question if there were any warning signs -
14:00 1h
American Monster
S6 · E3 · UnmaskedThe attempted murder of Robert Whedbee by wife LisaA 1994 case from Tennessee concerning the attempted murder of John Robert 'Rob' Whedbee at the hands of his then-wife Lisa and her lover Michael Frazier -
15:00 1h
True Conviction
S2 · E2 · John Is CallingThe case of 19-year-old college student Christa SallaniWhen 19-year-old college student Christa Sallani went missing, police feared the worst. Investigators were kept in the dark until a key witness broke the case widen open -
16:00 1h
True Conviction
S2 · E3 · Death UndercoverThe disappearance of Nancy KlingerThe case of Nancy Klinger, who disappeared soon after telling her friends that she had the chance of a lifetime. Soon after, she went missing. It took police nearly 30 years to solve the mystery -
17:00 1h
True Conviction
S2 · E4 · Murder at the BarbershopThe murder of Barry ShippThe case of Barry Shipp, a well-loved Pensacola barber, who was gunned down in broad daylight in his shop. It was hoped DNA left at the scene could identify the assailant
Tonight's Highlights
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18:00 1h
True Conviction
S2 · E5 · Murder in New EnglandThe murder of grandmother Irene KennedyThe murder of grandmother Irene Kennedy, found dead in a park. A distant relative was charged with her murder, splitting her family apart, and it took years, another killing and a jail house snitch to bring the family back together -
19:00 1h
The Night That Didn't End
S2 · E1 · John Doe 57How a dark tale of betrayal led to murderHow, when a tip from a missing persons' network helped identified the body of a John Doe murder victim, investigators' questioning unraveled a dark tale of betrayal -
20:00 1h
The Night That Didn't End
S2 · E2 · My Name Is DeniseThe hunt for the abductor of a young motherIn North Port, Florida, police received a call stating a young mother had vanished from her home. A trail of incoming 911 calls led officers on a hunt for her abductor -
21:00 30m
Road Rage
S2 · E1 · Disorderly ConductA disgruntled driver shoots at another motoristA man climbs onto the hood of a school bus. A menacing man harasses a father and his son. A disgruntled driver shoots at another motorist -
21:30 30m
Road Rage
S2 · E2 · Unfiltered FuryA driver gets into an intense exchange with construction workersA group of drivers brawl in a Texas intersection. A man attacks a motorist. A driver gets into an intense exchange with construction workers -
22:00 1h
Body Cam
S4 · E2 · TakenIn Florida, a gas station robbery quickly turns into a manhuntIn Florida, a gas station robbery quickly turns into a manhunt and leaves an officer fighting for his life. Plus, officers deal with a hostage situation in Colorado -
23:00 1h
American Detective with Lt Joe Kenda
S3 · E1 · CandyDetective Kevin Palmer discovers a devious plot to lure a victim to his death.When a young man turns up burned beyond recognition, Alabama detective Kevin Palmer soon discovers a devious plot to lure the victim to his death.