8.4/107 votesLoading...#1 - And Then There Were Three
Season 1 Episode 7 - Aired 12/21/2021
The case involved detective work so unique, it managed to stay with Dennis Murphy for years; days before Christmas, Michelle Martinko was visiting the mall when she was found stabbed to death; investigators found her killer almost 40 years later.
Director: N/A
Writer: N/A
8.3/1011 votesLoading...#2 - Lauren's Promise
Season 1 Episode 4 - Aired 11/23/2021
It is a case Josh Mankiewicz cannot forget because, while a student-athlete did everything right to keep herself safe, others did not; after she was found murdered, investigators learned she reached out for help multiple times before her death.
Director: N/A
Writer: N/A
8.0/105 votesLoading...#3 - The Grudge
Season 1 Episode 5 - Aired 11/30/2021
Andrea Canning reflects on a story that reminded her how people can be vulernable and how quickly life can change; she speaks with Judge Esther Salas about the knock at her door that robbed her of the most important thing in her life
Director: N/A
Writer: N/A
8.0/105 votesLoading...#4 - Voices for Vanessa
Season 1 Episode 9 - Aired 1/4/2022
A case that reveals an ugly secret about life in the military and one Andrea Canning will not forget; when soldier Vanessa Guillen vanishes from Fort Hood, her family brings attention to her disappearance and revelations inspire a movement.
Director: N/A
Writer: N/A
8.0/109 votesLoading...#5 - The Perfect Guy
Season 1 Episode 16 - Aired 3/1/2022
Andrea Canning reflects on this cautionary tale that still inspires her today. A man steals millions of dollars conning women and businesses over 25 years. One woman brings together a group of his victims to hold him accountable and face justice.
Director: N/A
Writer: N/A
8.0/109 votesLoading...#6 - The Eastlake Conspiracy
Season 2 Episode 3 - Aired 6/21/2022
Andrea Canning recalls a case in which investigators set up an elaborate sting operation to stop a murder-for-hire plot.
Director: N/A
Writer: N/A
7.9/1010 votesLoading...#7 - Conduct Unbecoming
Season 1 Episode 6 - Aired 12/14/2021
A man with both power and prestige managed to fool everyone, right up until his arrest.
Director: N/A
Writer: N/A
7.9/1010 votesLoading...#8 - Deliberate Evil
Season 1 Episode 20 - Aired 4/5/2022
Josh Mankiewicz returns to a case that took six years to report. A woman is found murdered after her friend hears her screaming on the phone. The case sits cold until the mysterious death of her boyfriend’s twin brother leads police to a suspect.
Director: N/A
Writer: N/A
7.9/107 votesLoading...#9 - Unchecked Evil
Season 1 Episode 23 - Aired 4/26/2022
A case Andrea Canning will never forget, because it revealed an unbelievable blind spot in law enforcement. Reagan Tokes worked a late shift at a local restaurant, then went missing. What happened to Reagan left her family and a city outraged.
Director: N/A
Writer: N/A
7.9/108 votesLoading...#10 - A Promise to Helene
Season 2 Episode 18 - Aired 11/8/2022
A college student is found murdered and the case sits cold for nearly 40 years. Josh Mankiewicz reflects on the vow that keeps the case alive and the innovative method used to catch the killer.
Director: N/A
Writer: N/A
7.9/107 votesLoading...#11 - On a Dark, Deserted Highway
Season 3 Episode 1 - Aired 1/18/2024
Keith Morrison recalls how a deadly high-speed chase in Montana led to a mystery, where a missionary turned into a monster and committed one of the state's most notorious crimes.
Director: N/A
Writer: N/A
7.8/106 votesLoading...#12 - Into the Night
Season 1 Episode 11 - Aired 1/18/2022
Keith Morrison won't soon forget a frantic three days in 2016, when a woman's disappearance in Oregon set off an intense manhunt. The suspect's 60-hour crime spree included carjacking, abduction and murder.
Director: N/A
Writer: N/A
7.8/1010 votesLoading...#13 - Finding Venus
Season 1 Episode 18 - Aired 3/22/2022
A case with a plot so diabolical, Dennis Murphy had to revisit. Venus Stewart stepped outside her door and vanished. Investigators suspected her ex, but he had an alibi. Then a video gamer’s tale had detectives seeing double and exposed the truth.
Director: N/A
Writer: N/A
7.8/108 votesLoading...#14 - The Man Who Talked to Dogs
Season 2 Episode 9 - Aired 8/2/2022
Investigators track down a suspect in the disappearance of a celebrity dog trainer. Keith Morrison reflects on the fractured love story at the center of this mystery.
Director: N/A
Writer: N/A
7.8/106 votesLoading...#15 - Mystery on Blood Mountain
Season 2 Episode 24 - Aired 12/20/2022
Gary Hilton is a name Dennis Murphy will always remember. A hiker goes missing and authorities suspect Hilton is reenacting a slasher movie. Dennis reflects on the real-life murder spree that terrorized the American South.
Director: N/A
Writer: N/A
- 7.8/105 votesLoading...
#16 - Down the Back Staircase
Season 2 Episode 28 - Aired 8/16/2023
When a novelist's wife is found dead at the bottom of the stairs, investigators wonder if it is an accident or murder; Dennis Murphy interviews main suspect Michael Peterson and returns to the case with insight only he can share.
Director: N/A
Writer: N/A
- 7.8/106 votesLoading...
#17 - Plot Twist
Season 2 Episode 46 - Aired 12/20/2023
For a group of stage actors, life seemed to be imitating art in the worst way when a college student was killed.
Director: N/A
Writer: N/A
7.7/106 votesLoading...#18 - The Interrogation
Season 1 Episode 22 - Aired 4/19/2022
A mother and son die in a house fire. A man confesses to their murders, but later says he was coerced. Keith Morrison returns to the case for an extraordinary look at the interrogation and the circumstances that could lead to a false confession.
Director: N/A
Writer: N/A
- 7.7/107 votesLoading...
#19 - Deadly Desire
Season 2 Episode 45 - Aired 12/13/2023
They were two beautiful families living out their dreams, but gunshots in a parking lot revealed an ugly truth. Detectives uncovered three lives tangled in a love triangle. Keith Morrison finds the tale of deceit and betrayal unforgettable.
Director: N/A
Writer: N/A
- 7.7/107 votesLoading...
#20 - Complicated
Season 3 Episode 7 - Aired 2/29/2024
When Josh Mankiewicz gets asked about his most memorable stories, the name Dayna Herroz comes to mind; after her daughter and 10-month-old grandson are murdered, her quest for justice ends with a twist in a San Diego courtroom.
Director: N/A
Writer: N/A
7.6/109 votesLoading...#21 - At the Bottom of the Lake
Season 1 Episode 13 - Aired 2/1/2022
Keith Morrison looks back on this haunting mystery he reported on for more than 10 years. A pilot flees following a plane crash, becomes a fugitive and lives a double life for decades.
Director: N/A
Writer: N/A
7.6/107 votesLoading...#22 - The Black Box
Season 1 Episode 19 - Aired 3/29/2022
Andrea Canning reflects on a story that hits close to home for her because of where it takes place. A coroner arrives at the scene of a car accident to find his friend deceased and begins to think her death looks suspicious
Director: N/A
Writer: N/A
7.6/1010 votesLoading...#23 - Under The Desert Sky
Season 2 Episode 1 - Aired 6/7/2022
A case Keith Morrison can't forget in which a teen's murder shakes a Nevada community and two unlikely people confess.
Director: N/A
Writer: N/A
7.6/109 votesLoading...#24 - Justice for Nikki
Season 2 Episode 11 - Aired 8/16/2022
Andrea Canning looks back on one of her most memorable cases where a fitness tracker helped detectives solve the mystery of a young woman's death in Wisconsin. Andrea confronts the killer in a tense interview.
Director: N/A
Writer: N/A
7.6/108 votesLoading...#25 - The Black Widow of Lomita
Season 2 Episode 13 - Aired 10/4/2022
A California woman's two former husbands are mysteriously murdered nearly 20 years apart. Keith Morrison reflects on the case that sent him halfway across the world on a hunt for answers.
Director: N/A
Writer: N/A
The Best Episodes of Dateline: Unforgettable
Every episode of Dateline: Unforgettable ranked from best to worst. Let's dive into the Best Episodes of Dateline: Unforgettable!
A series of reports chosen by "Dateline" correspondents that answers the question they most often get asked — what their most memorable story is and...
Genres:CrimeMysteryDocumentary
Network:Oxygen
Best Episodes Summary
"And Then There Were Three" is the best rated episode of "Dateline: Unforgettable". It scored 8.4/10 based on 7 votes. Directed by N/A and written by N/A, it aired on 12/21/2021. This episode scored 0.1 points higher than the second highest rated, "Lauren's Promise".