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Episode Details: A Promise to Helene
A Promise to Helene
Series: Dateline: Unforgettable
Season: Season 2
Episode Number: 18
Air Date:
Duration: 84 min
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.
Cast and Guests
Josh Mankiewicz
Self - Correspondent