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Complete Diabolical

Diabolical Season 3 Episode release dates & where to watch

Premiered

Tuesday, March 10, 2020

Ended: Tuesday, May 12, 2020

When does Diabolical Season 3 come out?

Diabolical Season 3 premiered Tuesday, March 10, 2020 on Investigation Discovery and ended Tuesday, May 12, 2020. The season has 10 episodes.

Last updated

Diabolical Season 3 release schedule

Diabolical Season 3 episode release dates
Episode Release date

1. Daddy's Little Nightmare

In 2017, Federal Heights, CO, is filled with fear when 69-year-old veteran Bill Mussack is reported missing, gone without a trace; police act fast to uncover a diabolical killer with a heinous plot before the malicious murderer strikes again.

Tuesday · 6 years ago

2. Hands That Rob the Cradle

In early 1980, two eerily similar crimes occur 400 miles apart; they both leave young mother dead and an infant child stolen; years later, police unravel a plot so cold-blooded, it leaves everyone even seasoned homicide detectives in utter shock.

Tuesday · 6 years ago

3. Masking Evil

A burning car is found by the side of a highway on the same night a single mother of two is reported missing; the two events are related and connecting the dots leads investigators to a notorious criminal who has been hiding in plain sight.

Tuesday · 6 years ago

4. Lie For Me

Air Force veteran Michael Giles disappears along with his savings of $206,000 and detectives find a that Kwaneta Harris has been draining his accounts.

Tuesday · 6 years ago

5. Sins of a Mother

In 1994, Lake Orion, MI, is rocked by a murder; at first, the crime is a mystery -- but in a small town where everyone knows each other, rumors start flying. Police soon expose a strange and twisted plot that no one saw coming.

Tuesday · 6 years ago

6. Teach Me To Kill

In Las Vegas, a beloved father of four is found dead in his car; he's been bound, gagged, and asphyxiated. Witnesses lead detectives to a local man named John Brian Ray, but this troubled man is just a pawn in the game of a criminal mastermind.

Tuesday · 6 years ago

7. Devil Wears False Eyelashes

Three men die over a span of a dozen years, with no suspicion of wrongdoing and no files charged. But when a deadly car explosion rips through downtown Pensacola, FL, a new investigation begins; all suspicion points toward just one person.

Tuesday · 6 years ago

8. Caught In the Cover-Up

In West Bloomfield, MI, a simple affair between two coworkers turns complex as the two lovers are willing to do anything, even commit murder, to protect their darkest secret.

Tuesday · 6 years ago

9. Killer Track Record

Three women die of the same mysterious illness, and the hunt is on to prove their deaths were no accident; investigators don't realize they're being played for fools by a sinister killer lurking undetected.

Tuesday · 6 years ago

10. Evil Sister Act Finale

When Samuel Johnson Jr. suddenly vanishes, investigators find themselves face-to-face with two sisters who know something; through a series of interrogations, they reveal an elaborate murder plot meticulously engineered by a puppeteer.

Tuesday · 6 years ago

Diabolical Season 3 guest stars

  • Leslie Rule

    Self - Co-Author, 'Lying in Wait'

Diabolical Season 3 FAQ

When does Diabolical Season 3 come out?

Diabolical Season 3 premiered Tuesday, March 10, 2020 on Investigation Discovery.

How many episodes are in Diabolical Season 3?

Diabolical Season 3 has 10 episodes.

Are new episodes of Diabolical Season 3 released weekly?

New episodes are released weekly.

When is the Diabolical Season 3 finale?

The Diabolical Season 3 finale (Episode 10) aired Tuesday, May 12, 2020.

How do I get notified when new Diabolical Season 3 episodes are released?

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