Dana Walsh covers her tracks in CTU

Dana Walsh covers her tracks in CTU

24: Dana (Katee Sackhoff, R) covers her tracks in the “4:00 – 5:00 AM” episode of 24 that aired Monday, March 22 (9:00-10:00 PM ET/PT) on FOX. ©2010 Fox Broadcasting Co. Cr: Kelsey McNeal/FOX

Gallery: 24 Season 8 Episode 13 (4:00AM – 5:00AM) Photos « Prev Next »

Chloe O'Brian argues with Brian Hastings

Chloe O'Brian reactivates the CTU servers

Hassan family reunited with their daughter

Dana Walsh covers her tracks in CTU

Dana Walsh kills Bill Prady in CTU

Dana Walsh strangles Bill Prady 24 Season 8

Dana Walsh is revealed as the mole 24 Season 8

Bill Prady (Stephen Root) passes the time

Cole Ortiz pursues nuclear rods 24 Season 8

Jack Bauer with assault rifle 24 Season 8 episode 13

Jack Bauer helps an injured CTU field operative

Jack Bauer checks on Agent Owens

Jack Bauer with machine gun in 24 Season 8 episode 13

Renee Walker comforts Jack 24 Season 8 Episode 13

Renee Walker saves Jack in 24 Season 8 Episode 13

Chloe O'Brian pointing gun in 24 Season 8 Episode 13