When did Dateline: Unforgettable Season 1 Episode 7 air?
Dateline: Unforgettable Season 1 Episode 7 aired on December 21, 2021.


A series of reports chosen by "Dateline" correspondents that answers the question they most often get asked — what their most memorable story is and why.

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.
Direct answers for episode-level questions and details.
Dateline: Unforgettable Season 1 Episode 7 aired on December 21, 2021.
This episode runs for approximately 84 minutes.
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