8.2/1013 votes#1 - Daddy's Little Nightmare
Season 3 Episode 1 - Aired 3/10/2020
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.
Director: N/A
Writer: N/A
- 8.7/1013 votes
#2 - Hands That Rob the Cradle
Season 3 Episode 2 - Aired 3/17/2020
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.
Director: N/A
Writer: N/A
- 8.4/109 votes
#3 - Masking Evil
Season 3 Episode 3 - Aired 3/24/2020
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.
Director: N/A
Writer: N/A
- 7.8/1010 votes
#4 - Lie For Me
Season 3 Episode 4 - Aired 3/31/2020
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.
Director: N/A
Writer: N/A
- 7.7/108 votes
#5 - Sins of a Mother
Season 3 Episode 5 - Aired 4/7/2020
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.
Director: N/A
Writer: N/A
- 8.2/1014 votes
#6 - Teach Me To Kill
Season 3 Episode 6 - Aired 4/14/2020
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.
Director: N/A
Writer: N/A
- 8.0/1011 votes
#7 - Devil Wears False Eyelashes
Season 3 Episode 7 - Aired 4/21/2020
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.
Director: N/A
Writer: N/A
- 8.5/1012 votes
#8 - Caught In the Cover-Up
Season 3 Episode 8 - Aired 4/28/2020
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.
Director: N/A
Writer: N/A
- 7.5/1010 votes
#9 - Killer Track Record
Season 3 Episode 9 - Aired 5/5/2020
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.
Director: N/A
Writer: N/A
- 7.3/1012 votes
#10 - Evil Sister Act
Season 3 Episode 10 - Aired 5/12/2020
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.
Director: N/A
Writer: N/A
The Best Episodes of Diabolical Season 3
Every episode of Diabolical Season 3 ranked from best to worst. Discover the Best Episodes of Diabolical Season 3!
Like trying to decipher the value of a book without ever opening it, judging a person by his or her outward appearance can be a...
Genres:CrimeDocumentaryFamilyReality
Network:Investigation Discovery
Season 3 Ratings Summary
"Daddy's Little Nightmare" is the best rated episode of "Diabolical" season 3. It scored 8.2/10 based on 13 votes. Directed by N/A and written by N/A, it aired on 3/10/2020. This episode is rated 0.5 points higher than the second-best, "Hands That Rob the Cradle".