Dateline: Unforgettable (2021) is a Crime, Documentary series that follows 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. Currently, you can watch Dateline: Unforgettable on OXYGEN. Streaming availability may vary by country and platform over time. It has a user rating of 7.0 out of 10 from 1 votes. Fans of crime series may also want to explore similar titles below.