Contains spoilers for this episode and earlier episodes.
Jack confronts Sherry at Hewitt's loft and discovers the frightened programmer hiding behind a wall. Sherry admits that Kingsley hired Hewitt to fabricate the Cyprus recording. She wanted to damage David's presidency and says Kingsley promised the bomb would never explode. Hewitt agrees to demonstrate the audio manipulation after Sherry offers him protection, but he grows suspicious of Jack and Sherry's intentions. The witness Jack needs is becoming harder to keep cooperative.
Prescott moves ahead with the attack while Palmer remains confined. Aaron Pierce helps Palmer contact Jack on a satellite phone, allowing him to learn about Hewitt and Sherry's involvement. Novick discovers the call, takes the phone and has Pierce arrested. At CTU, Chappelle refuses Jack a helicopter and removes Tony from command. Tony and Michelle lure Chappelle into a holding room and incapacitate him so they can send the aircraft without his permission.
Kim returns to the Matheson house with a police escort, unaware that Gary is inside. She discovers the officer's body, flees upstairs and knocks Gary unconscious during a struggle. Kim takes his gun and calls CTU. Jack talks her through the danger as Gary starts moving, and she shoots him twice. Jack arranges for Kate to collect his daughter. During the distraction, Hewitt stabs Sherry and escapes through a hidden passage, forcing Jack to chase him.