Jack uses Sherry to lure Kingsley out into the open, but Kingsley suspects a set-up and lays his own trap.

Kate and her father have a final, ominous conversation with Marie.

Palmer’s attorney finds evidence involving Kingsley and convinces Mike to release Palmer from custody. Palmer and his cabinet gather to watch as Sherry meets with Kingsley. Mike orders Chappelle to reinstate Tony and Michelle.

Jack sends Sherry in for the meeting with Kingsley, but his mounting heart troubles cause problems for him at the crucial moment.

When Jack hits a dead end with his lead, he realizes he must persuade Sherry to help him get evidence against Kingsley.

Things go awry at CTU when Division becomes suspicious of Chappelle’s absence. Michelle goes off-site to work with Jack.

Mike and Prescott ask Palmer to aid them as the bombers get closer to their targets.

Jack locates the man who forged the audio evidence, but his efforts to break him down are sabotaged by Sherry Palmer, who has a hand in the conspiracy.

Kim returns to the Matheson home, where she discovers that her problems are far from over.

Palmer searches for an ally who will help him get a message out to CTU.

Tony and Michelle take Chappelle out of action when he hinders their efforts to help Jack.

Palmer’s cabinet invokes the 25th Amendment in an attempt to remove him from power. They place him on trial for his extreme actions during the nuclear bomb threat.

Jack and Michelle work against the clock to prove that the evidence against the Middle East is false.

Jack finds an ally who may help him escape from Kingsley’s men.

Lynne meets with foul play before she can warn Palmer of the conspiracy against him.

Chappelle interferes with Tony’s efforts to assist Jack.

Kate offers her captors money in exchange for the chip.

Jack is captured and tortured by men who want the chip.

Kate and Yusuf run into a group of angry rednecks before they can deliver the chip to CTU.

Tony and Michelle share a tender moment after her brother flips out.

Palmer leans towards holding off the attacks, while Lynne discovers a secret operation that the Vice-President is planning against Palmer.

Jack, Kate and Wallace fight to escape from a deadly band of commandos.

Palmer decides to take a stronger stance against the civil unrest resulting from the bomb explosion.

Tony’s trust in Michelle is broken when he suspects her of betraying him.

Kim’s worries seem to be over when she learns the charges against her have been dropped.

Jack meets with the surviving Coral Snake Commando, who demands Kate Warner in exchange for evidence about the recordings.

Tony and Carrie spy on Michelle when he suspects that she is working with Jack.

Mike and the Vice-President turn up the pressure on Palmer, when he expresses his doubts about the impending war.

Jack and Michelle question Syed Ali, who claims that the audio recordings are false.

Palmer prepares to wage war against the three countries who were involved in the nuclear strike.

Kim gets caught in a hostage situation.

Jack is contacted by a man who wants to exchange information for Kate Warner.

After being chased by creatures and visiting an ice planet, the team begins to wonder if they are on a pointless quest. Draga opens a gate to «  »where they wish to go » » and they end up on Earth in the Yucatan, where a local professor working for a Horace Van Gelder reveals she discovered the new gate. The shapeshifter Nephestus, disguised as Grimes, is working with Van Gelder and gets word the team is present when they contact Stargate Command. Disguised as Stoneman, Nephestus welcomes them and claims he’ll help them clear their names, then summons Da’kyll and his Tlak’khan. Draga suspects something as Stoneman sends the cadets into Cancun – in fact it’s an ambush but they turn around and return. Gus and Draga catch on and make their escape while the others return in just in time to rescue them. The team is forced to escape through the Gate and go on the run once more before they can clear their names, and the Tlak’khan and Nephestus depart with Van Gelder as Nephestus takes his place to