Rebecca's deal to save Donovan doesn't go as planned. CTU must rely on Carter to go out into the field and facilitate an important exchange.

Andy uncovers important information about a high-ranking official, leading Carter and Donovan to team up and find out more. A reinforcement is brought into CTU to oversee operations.

Rebecca's personal and work life collide when she gets a phone call that forces her to make an important decision. Nicole confronts Carter about his commitment to their relationship and his future with the CTU.

A threat forces CTU to go on lock-down. Carter finds himself in a tense situation. Donovan reaches out to Rebecca when he faces a big decision in his campaign.

Mullins and CTU try and track down Carter. Andy is forced to do something he doesn't want to. Rebecca's interrogation techniques lead Donovan to question her judgment. Isaac turns to his friends for help.

Carter turns to Andy for help in order to get crucial evidence back in their possession. Meanwhile, Rebecca calls in someone from the outside when CTU's regular interrogation techniques lead them to a dead end.

Using a lead, Carter and CTU narrow in on an enemy's location. Meanwhile, Amira comes to a crossroads as her plan nears completion.

Grimes comes to Carter with information that might lead them to the terrorists. Meanwhile, at the Donovan compound, Nilaa is sequestered and questioned by Rebecca.

When Ben Grimes demands money in exchange for the list he seized from a safe box in Khalid's compound, Carter must go back to his roots to help obtain the money.

When an attempt on U.S. Army Sergeant Eric Carter's life is made after his return home from a mission to kill terrorist leader Bin Khalid, he discovers that he and his fellow Rangers' identities have been compromised.