BREAKING BAD follows protagonist Walter White (Cranston), a chemistry teacher who lives in New Mexico with his wife (Gunn) and teenage son (Mitte) who has cerebral palsy. White is diagnosed with Stage III cancer and given a slim chance to survive. With a new sense of fearlessness based on his medical prognosis, and a desire to secure his family's financial security, White chooses to enter a dangerous world of drugs and crime and ascends to power in this world. The series explores how this fatal diagnosis transforms Walt from mild family man to a kingpin of the drug trade.

Bonus Features:

• Bad Memories - Bryan Cranston and Aaron Paul talk about the show ending and some of their favourite moments.
• Bryan Cranston: Director - Go on set with Bryan Cranston as he directs the first episode of the season entitled "Blood Money."
• Scene Envy - The Cast tell us which scene they wish they could have been in.
• Shocking Moments - The stars reveal the moments that shocked them most.
• From Walt to Heisenberg - From high school teacher to deadly meth dealer, watch as Walter White quickly transforms into Heisenberg.
• How Will It End? - At the beginning of the season, the cast was asked to give their thoughts on how they thought the show would end.
• Avenging Agent: Dean Norris as Hank Schrader -- A look at the character Hank Schrader and the man who played him, Dean Norris.
• Scene Stealer: Betsy Brandt as Marie Schrader - A look at the character Marie Schrader and the woman who plays her, Betsy Brandt.
• A Criminal Attorney: Bob Odenkirk as Saul Goodman -A look at the character Saul Goodman and the man who played him, Bob Odenkirk.
• Jesse's Journey: Aaron Paul as Jesse Pinkman - A look at the character Jesse Pinkman and the man who played him, Aaron Paul.
• Skyler Breaks Bad: Anna Gunn on Season Four - Actress Anna Gunn and series creator Vince Gilligan explore Skyler's character evolution through the fourth season.
• Growing Up in the White House: RJ Mitte on Walter, Jr. - RJ Mitte, Anna Gunn, Bryan Cranston and series creator Vince Gilligan discuss the extraordinary dynamics of the White family, and Walter, Jr.'s unique role.
• The Ultimate Chess Match - Members of the cast and crew discuss Walter White and Gus Fring's extraordinary and complicated battle of wits and their struggle for Jesse's allegiance.
• Looking Back: A Season Four Retrospective - Season Four's most surprising and memorable moments.
• Ted's Wipeout - In Episode 411, "Crawl Space," Ted Beneke suffers a head injury while trying to escape from Saul's goons. In this featurette, Christopher Cousins (Ted) explains how this shocking stunt was accomplished.
• The Truck Attack Storyboard Comparison - A side-by-side comparison of the Los Pollos Hermanos truck attack and the brilliant shot-by-shot storyboards that were created for the episode "Bullet Points."
• Walt and the Challenger Storyboard Comparison - A side-by-side comparison of the sequence where Walt indulges in some crazy stunt driving in Walt Jr.'s Dodge Challenger and the storyboards that were created.