The Whites welcome a new addition. Walter Jr. launches a new website in an effort to aid his struggling family. Jesse’s addiction begins to spiral out of control. Jane and Jesse’s relationship leads to friction with both Walt and Donald.

As the CBI investigates the murder of a young girl and the abduction of her twin sister, Lisbon suspects that Red John is trying to draw Jane into a trap.

Ted is trying to keep his architecture firm afloat by doing an all-nighter, but Marshall tries to lure him to the roof for a surprise 31st birthday party, on the fourth season finale.

Jack Bauer is forced to help Tony escape from custody, only to find Tony plans to use Jack to reconstitute the pathogen. Aaron Pierce and Ethan Kanin work together and discover Olivia’s role in Hodges’ murder. Kim Bauer takes down her captors, and works with Renee Walker to find her father.

Presented with the evidence of Olivia’s actions, President Allison Taylor is forced to make a decision between her family and the Presidency. Thanks to Kim Bauer, Janis, Renee and Chloe are able to save Jack and arrest Tony before he can kill Alan Wilson. With Wilson refusing to talk and Jack about to die, the fight is no longer in the field, it’s for the hearts and souls of Jack and Renee.

When Walt and Jesse’s crew of dealers begins to dwindle, Saul proposes a new business partner. Meanwhile, Skyler makes a disturbing discovery at work and confronts Ted. Jesse divulges his real profession to Jane, and their relationship takes a dangerous turn.

Familiar faces turn up as Michael tries to take down the Company.

Michael makes one final attempt to get Scylla and destroy the Company.