Season 1 of Dateline: Unforgettable premiered on March 8, 2021
Season 2
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2022 • 48 Episodes
Season 2 of Dateline: Unforgettable premiered on June 7, 2022
Season 3
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2024 • 11 Episodes
Season 3 of Dateline: Unforgettable premiered on January 18, 2024
Season 4
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2024 • 10 Episodes
Season 4 of Dateline: Unforgettable premiered on June 6, 2024
Season 5
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2025 • 8 Episodes
Season 5 of Dateline: Unforgettable premiered on January 16, 2025
Season 6
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2025 • 3 Episodes
Season 6 of Dateline: Unforgettable premiered on June 5, 2025
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.