Unforgettable
Season 1, Episode 12: Butterfly Effect
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When a construction worker with a promising future is murdered, Carrie and Al wonder if his ties to the mob were the cause of his death or an unrelated coincidence.
All Episodes - Season 1
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