|Played by:||Michael Hyatt|
|First episode:||"Day 4: 1:00pm-2:00pm"|
|Last episode:||"Day 5: 8:00am-9:00am"|
Marcy spoke with Jack Bauer at 1:42pm as he arrived at Felsted Security. She was planning to help him identify a terrorist suspect that Jack and Audrey Raines were going to find in camera footage that was stored at Felsted.
Marcy identified terrorist supporter Henry Powell from photos sent to her by Jack and Audrey. She informed Jack that Powell was once an employee of McLennen-Forster, and that he was planning to flee via helicopter from Van Nuys. She ordered the helicopter to remain grounded after Jack arrived; though Powell was captured, he was quickly silenced by a sniper.
From the capital, Marcy spoke on the phone to DOD Liaison Raines, who was at CTU LA, to give her some requested information.