- Played by Michelle Rodriguez.
BEFORE THE CRASH
- Was an officer with the LAPD.
- Was shot in the line of duty while responding to a reported burglary. Pregnant at the time, she suffered a miscarriage.
- After taking a leave of absence, she returned to work, despite the reluctance of Teresa, who was her commanding officer as well as her mother.
- When asked to identify her assailant, Jason Elder she lies, claiming that the man they have in custody was not the man who shot her.
- Followed Elder to a bar, and shot him six times in cold blood.
- Quit the force when confronted by Teresa as the only viable suspect in Elder's murder.
- Got a job working airport security at LAX.
- Met Christian Shephard at the bar at LAX, and he asked her to accompany him to Sydney as his bodyguard. She accepted, thinking she could run from her problems. They gave each other fake names. She called him "Tom" and he called her "Sarah."
- Was present when Christian drunkenly confronted Lindsey.
- Disgusted by his actions, she left Christian at the bar where he talked to Sawyer.
- In the Sydney airport, while hearing Jack talking to the Oceanic desk clerk, was inspired to call Teresa and ask to come home.
- Met Jack in the airport bar. They struck up a conversation and discuss the possibility of meeting on the plane.
- Was in the tail section of the airplane, seat 42F.
ON THE ISLAND
- The leader of the Tailenders. Insisted on complete obedience to her strict rules.
- Was thrown into a makeshift holding cell with Sawyer, Michael, and Jin, pretending to be a prisoner, to find out who they are.
- Took away Sawyer's gun and left them in the cell, foiling their escape plan.
- Her group of survivors lived briefly in a second hatch, similar to that found by the other survivors.
- Decided to take the other tailies back to the main camp. OrdersMichael, Sawyer, and Jin to take them.
- Mistakenly believing Shannon to be an Other, shot and killed her.
- Holds Sayid hostage. Tells him that she's "dead;" he later provides that as his reason for not killing her to avenge Shannon.
- Has been asked by Jack to train an army.
- Was suspected by Kate to be behind the attack on Sun, but was in fact innocent of this.
- Saw Danielle but didn't know who she was. Told Sayid about her, and then left at his request.
- Was asked by Locke to interrogate Henry Gale because she was a police officer and had experience with The Others. She manages to convince him that she wants to help him. He draws her a map to where his balloon and wife's grave should be located. Without telling Locke or Jack about this information she sets off with Sayid and Charlie to find out the truth.
- Told Sayid she was sorry for killing Shannon.
- Stopped Sayid from shooting the fake Henry Gale during an interrogation.
- Was left in charge of the fake Henry Gale by Jack when he and Kate leave on their prisoner exchange mission.
- Was injured by the false Henry Gale in an attempt to give him food.
- Henry Gale claims she is not one of the "good people" but claims Goodwin thought she could be changed.
- Tried to get a gun from Sawyer; succeeded by having sex with him and then taking it without his knowledge.
- Intended to kill the fake Henry Gale, but could not bring herself to do it.
- Was shot by Michael after she gave him the gun when he offered to kill the fake Henry Gale for her. Confirmed dead by the shows producers.