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Dateline Season 22 Episode 9

A Promise to Helene

When college student Helene Pruszynski is found murdered, her case remains cold for nearly 40 years until a new detective uses an innovative method to catch the killer. Josh Mankiewicz reports.

Oct. 16, 2020

22 - 39
The Phone CallApr. 16, 2021
22 - 38
Sex, Lies, & MurderApr. 09, 2021
22 - 37
Mommy DoomsdayMar. 26, 2021
22 - 36
The Waiting CarMar. 25, 2021
22 - 35
The Woman with No NameMar. 18, 2021
22 - 34
The Life She WantedMar. 12, 2021
22 - 33
Return to the LandingMar. 04, 2021
22 - 32
Collateral DamageFeb. 26, 2021
22 - 31
The Monster at LargeFeb. 12, 2021
22 - 30
Broken CircleFeb. 11, 2021
22 - 29
The Black Box (Repeat)Feb. 11, 2021
22 - 28
Death of a Hometown HeroFeb. 05, 2021
22 - 27
Shannon's StoryFeb. 04, 2021
22 - 26
The Woman at the BarJan. 29, 2021
22 - 25
Lauren's PromiseJan. 28, 2021
22 - 24
Night of the Summer SolsticeJan. 22, 2021
22 - 23
The GrudgeJan. 21, 2021
22 - 22
Open WaterJan. 08, 2021
22 - 21
Journey for JusticeJan. 07, 2021
22 - 20
The Life and Death of Princess DianaDec. 18, 2020
22 - 19
Into the Night - Part 2Dec. 11, 2020
22 - 18
Far from Spider LakeDec. 04, 2020
22 - 17
Race for a VaccineDec. 03, 2020
22 - 16
Point BlankNov. 20, 2020
22 - 15
Voices for VanessaNov. 19, 2020
22 - 14
10 Minutes to SunsetNov. 13, 2020
22 - 13
The Eastlake ConspiracyNov. 06, 2020
22 - 12
Hope WhispersOct. 30, 2020
22 - 11
Return to Shalimar WayOct. 29, 2020
22 - 10
Even the Devil Went to ChurchOct. 23, 2020
22 - 9
A Promise to HeleneOct. 16, 2020
22 - 8
The Client: A New LookOct. 15, 2020
22 - 7
What Happened to Don LewisOct. 12, 2020
22 - 6
The Dead of NightOct. 09, 2020
22 - 5
Lone Star ObsessionOct. 08, 2020
22 - 4
A Killer RoleOct. 02, 2020
22 - 3
Tallahassee TrapOct. 01, 2020
22 - 2
Left For DeadSep. 24, 2020
22 - 1
Trouble at the 7-11 RanchSep. 21, 2020