Heller informs the President about the six reactors still at risk for meltdown. President Keeler orders the evacuation of those cities.
From the car, Jack calls Heller's cell phone and warns him not to let anyone know that he's on the phone. Jack says that someone at CTU was responsible for the attack on the security company from which he and Audrey escaped. Jack wants Heller to use one of their DoD tricks to flush out the mole.
Audrey is visibly upset about the second attempt on her life. Tony explains to Jack that Michelle Dessler left him. He was released from prison only because of Jack and President Palmer's help.
President Keeler addresses the nation and calls for an evacuation in the six cities. As they watch the President's broadcast, Curtis whispers to Driscoll that there won't be enough time to completely evacuate those cities. They must find the people who are holding the Override device in order to save lives.
Marwan wants to manage the Override himself to make sure everything still goes as planned. Navi assures him that Dina and Behrooz will be dead by the end of the day.
Behrooz drives nervously. He implores his mother to get medical attention even though Navi knows they will need to go to a hospital. Dina wants him to drop her off and leave, but Behrooz insists that they stay together.
Marianne sneaks into the restroom and phones Powell. He tells her that Jack and Audrey are still alive. Knowing that Jack has not called into CTU, Marianne is sure that Jack is aware of the security breach. Powell orders her to stay at CTU regardless of her getting caught. Sarah enters, and directs Marianne to get back to work.
Heller's assistant, Scott Borman, arrives at CTU. Heller wants him to tell Driscoll that Jack went to watch the surveillance video at an old CTU substation in Torrance. Borman puts out a Defense Department Comsat envelope on CTU so that he can track who transmits any communication about that planted information.
Tony brings Jack and Audrey to his house. He explains to his "friend" Jen that she cannot leave until Jack is safely gone. They access the memory sticks from Felsted on Tony's computer. Jack explains to Audrey that Michelle left Tony after he got out of prison. Tony had refused to find another job and started drinking. Michelle now serves as Deputy Director at Division.
Heller knows that Driscoll won't be happy when she finds out that she was lied to about the mole situation in CTU. However, it's the only way to stop the leak.
Borman informs the CTU staff that Jack wants his whereabouts at the CTU substation to be kept secret. After hearing this, Marianne goes back to her desk and says the phrase "Old CTU substation in Torrance" into a digital voice recorder. She plugs the device into her system and types some commands on the keyboard.
Jack sends the video with the man identified by Audrey to his office at the Department of Defense in Washington.
After Borman finds the person who gave out the faked info, Heller reveals the plan to Driscoll.
Heller and Driscoll walk down to the suspect, flanked by guards. They pass Marianne and go right to Sarah. Sarah is placed under arrest for passing classified information. She pleads that they've made a mistake.
Borman orders Edgar and Marianne to send him all of Sarah's files. Edgar doesn't believe that Sarah would compromise Jack or the investigation. He pulls up the message that Sarah supposedly sent, which was left on her system waiting to be found. Even the encryption is poorly done. Marianne sniffs that Sarah isn't the brightest person.
In the holding room, Driscoll tries to interrogate Sarah, but she insists that she was set up. Torture specialist Eric Richards comes in with his tools. He tasers Sarah, but she sticks to her story.
Driscoll tells Heller that she can only break Sarah if she's guilty. Driscoll doesn't believe that Sarah fits the profile.
Heller informs Jack that they removed the mole. Jack says he will let DoD know that the CTU channels are now clear. Jack asks Heller to send the Secret Service to pick up Audrey.
Jack asks Tony why he never called him for help when he was down on his luck. Tony says that what he did for Jack today is a repayment of the debt he owed for getting him out of prison. Tony doesn't want to be reminded of his past and doesn't want to get involved in the case any further.
Dina is treated at a hospital. Although the doctor thinks it is a gunshot wound, Dina is adamant that she was injured by a nail. Behrooz sees the doctor say something to a nurse, but neither makes a phone call to the authorities. They believe they are safe. Dina tells her son that she can arrange for them to leave the country if they can just get out of Los Angeles.
Marcy at DoD calls Jack with an identification on the man from the surveillance video. His name is Henry Powell and he is a computer consultant for same the company that created the Override device. Powell is currently attempting to leave Los Angeles, and he got a special dispensation to clear grounded air traffic. Jack asks Marcy to prevent Powell's helicopter from taking off. The Secret Service arrives to take Audrey back to CTU. They give Jack a car to go to the helipad.
Jack calls Driscoll and asks her not to tip off Powell by sending backup. He wants to handle this by himself. Tony offers to help Jack.
Edgar asks Curtis about Sarah. He goes back to his desk, eyeing Marianne warily.
As the doctor tends to Dina's wound, Behrooz notices a hospital security guard talking to a nurse. He sees a police car outside. Behrooz pushes the doctor aside, and helps his mother out of the ward. He grabs medical supplies on his way out. They quickly get in their car and speed away. The police are too late to stop them.
Edgar tells Marianne that he finally has bumped up her security clearance. He gives her a screen for her to enter her new password. As she types, the password appears on Edgar's system and he is able to access her files. Marianne becomes suspicious when Edgar keeps looking over at her. She confronts him, threatening to get him fired for protecting Chloe.
Marianne watches as Edgar accompanies Curtis to Driscoll's office. Edgar tells them that he intercepted Marianne's computer and saw her using Sarah's system to communicate outside of CTU.
Curtis chases after Marianne as she leaves the building. In the parking lot, he places her under arrest and orders another agent to impound her car. As the agent puts the key in the door, Marianne's car explodes in a fireball. Marianne is knocked unconscious on the ground.
Powell reaches his helicopter, but the pilot tells him they've been grounded by the Defense Department. Powell pulls out a gun and forces the pilot to take him up.
Jack and Tony arrive at the helipad as the rotors fire up. They surround the chopper with guns raised. Jack apprehends Powell, who offers to pay Jack and Tony to let him go. Suddenly, a shot rings out and Powell is hit in the chest by a sniper hiding on a nearby rooftop. Jack's only lead to the terrorists is now dead.