Season
- Season 4 2015-11-27
- Season 3 2014-06-29
- Season 2 2013-07-28
- Season 1 2011-09-20
Episode
- Episode 1: Pilot
- Episode 2: Heroes
- Episode 3: Check Out Time
- Episode 4: Up in Flames
- Episode 5: With Honor
- Episode 6: Friended
- Episode 7: Road Block
- Episode 8: Lost Things
- Episode 9: Golden Bird
- Episode 10: Trajectories
- Episode 11: Spirited Away
- Episode 12: Butterfly Effect
- Episode 13: Brotherhood
- Episode 14: Carrie's Caller
- Episode 15: The Following Sea
- Episode 16: Heartbreak
- Episode 17: Blind Alleys
- Episode 18: The Comeback
- Episode 19: Allegiances
- Episode 20: You Are Here
- Episode 21: Endgame
- Episode 22: The Man in the Woods
Unforgettable Season 1 Butterfly Effect
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 the day her sister was murdered.
