Dateline: Unforgettable
Season 2 Episode 18 - A Promise to Helene
7.0 ?
2021
Crime, Documentary
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.
Episodes in Season 2
1
Under The Desert Sky
85 min
2
The Officer's Wife
85 min
3
The Eastlake Conspiracy
43 min
4
A Novel Defense
84 min
5
Smoke And Mirrors
84 min
6
Somebody's Daughter
85 min
7
The Last Dance
84 min
8
Return to the Lonely Road
85 min
9
The Man Who Talked to Dogs
85 min
10
Out of the Darkness
84 min
11
Justice for Nikki
85 min
12
House of Secrets
84 min
13
The Black Widow of Lomita
85 min
14
The Pink Gun Mystery
85 min
15
Even the Devil Went to Church
84 min
16
The Day Jennifer Disappeared
84 min
17
In the Dead of Night
85 min
18
A Promise to Helene
84 min
NOW PLAYING
19
Death of a Golden Girl
84 min
20
Secrets From the Grave
84 min
21
Fallen
84 min
22
The Box
84 min
23
The Creek
84 min
24
Mystery on Blood Mountain
84 min
25
The Betrayal of Sarah Stern
84 min
26
The Dead of Night
84 min
27
Deadly Valentine
84 min
28
Down the Back Staircase
84 min
29
The Ranch
84 min
30
What Happened to Amy?
84 min
31
The Secret of Spirit Lake
84 min
32
The Plan
84 min
33
The Haunting
84 min
34
Internal Affairs
84 min
35
Return to Manitowoc County
84 min
36
Twisted
84 min
37
Good & Evil
84 min
38
The House
84 min
39
Breakout
84 min
40
Family Affair
84 min
41
The Women and Dirty John
84 min
42
Open Water
84 min
43
The Silhouette
84 min
44
The Sting
84 min
45
Deadly Desire
84 min
46
Plot Twist
84 min
47
The Life and Death of Princess Diana
84 min
48
The Last Dive
84 min
