Lynn orders Curtis to take Jack into custody for violating presidential orders, but Jack breaks away from Curtis when Nathanson contacts him through Audrey and offers information on the location of the nerve gas.

Lynn begins to unleash on his coworkers as he discovers that they may be working against him to aid Jack.

The head of the terrorists makes a demand on Logan, and Martha takes a dangerous step to get her husband's attention.

Logan wrestles with his conscience when he learns that Martha is riding in the motorcade with the Suvarovs.

Audrey convinces Curtis to take action as Lynn continues to abuse his authority.

Jack learns that an ex CTU agent, Christopher Henderson, works for a company which is connected with the nerve gas.

Jack interrogates Henderson's wife about her husband's connection to the terrorists.

Lynn begs his sister to return his stolen keycard, while Tony regains consciousness and learns of Michelle's fate.

Martha gives Logan the cold shoulder, while Curtis tracks another nerve gas attack to a local hospital.

Jack takes Henderson to CTU for questioning. Once there, he faces an unhappy reunion with his daughter, Kim.

Mike appeals to Martha for help as Logan faces pressure from his Vice-President to declare martial law on L.A.

Lynn connects the theft of his keycard to an impending strike on CTU, but his warning comes too late to stop a terrorist from infiltrating the building.