| Season Number: | 1 |
| Bgcolour: |
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| Num Episodes: | 22 |
| Network: | CBS |
| Episode List: | List of Unforgettable episodes |
The first season of the CBS American television drama series Unforgettable was premiered on September 20, 2011, and concluded on May 8, 2012, after 22 episodes. It was broadcast on Tuesdays at 10:00 pm.
A former Syracuse, New York, police detective, Carrie Wells, has hyperthymesia, a rare medical condition that gives her the ability to visually remember everything. She reluctantly joins the New York City Police Department's Queens homicide unit after her former boyfriend and partner asks for help with solving a case. The move allows her to try to find out the one thing she has been unable to remember, which is what happened on the day her sister was murdered.