Contains spoilers for this episode and earlier episodes.
Jack tells Kate about the nuclear threat and prepares her to identify Syed Ali at a mosque. The team waits for the prayer service to finish so she can watch the people leaving. Marie removes the computer hard drive from Warner Enterprises, where Reza and the two CTU escorts lie dead. Ali calls and orders her to retrieve the bomb's trigger from Marko's workplace. She changes her appearance and travels to the lumber business to get into his locker.
Palmer has Roger Stanton arrested and privately gives Ted Simmons authority to extract information from him using whatever methods he considers necessary. Simmons begins applying electric shocks while Stanton continues denying involvement. Michelle reports the office murders to Tony, with security footage pointing to Marie as the shooter. Tony warns Jack, who argues that Kate cannot have known what her sister was doing because Ali's men were about to kill her. He keeps the news from Kate during the mosque operation.
Kim avoids the police searching near the crash but becomes lost in the woods. A cougar frightens her into running, and a trap catches her leg, leaving her unable to move away. At the mosque, Kate does not see Ali come out. Jack leads the search inside, where a burning man appears to have killed himself in Ali's clothes. Jack first reports Ali's suicide, then notices that the trousers do not fit the body and realizes the real Ali remains hidden.