Walt purchases an illegal, untraceable snub-nosed revolver, planning to assassinate Gus. Jesse, consumed by guilt over killing Gale Boetticher, throws a non-stop, drug-fueled party at his house to drown out his thoughts. Hank continues to struggle with his painful physical therapy. Episode 3: "Open House" Director: David Slovis Writer: Sam Catlin Original Air Date: July 31, 2011

For fans looking to download or stream the season legally, Breaking Bad Season 4 is widely available across multiple formats: Netflix (Worldwide), AMC+, and iTunes.

The DEA questions Gus Fring regarding his fingerprints found at Gale's apartment. Flashbacks reveal Gus’s backstory in 1989 Mexico, showing how cartel boss Don Eladio ordered the execution of Gus’s business partner and close friend, Max Arciniega. Episode 9: "Bug" Director: Terry McDonough Writer: Moira Walley-Beckett Original Air Date: September 11, 2011

Walt and Jesse are held hostage in the superlab by Victor and Mike, awaiting Gus’s judgment after Gale's murder. In a horrifying display of dominance, Gus arrives and brutally kills Victor with a box cutter to send a message. Meanwhile, Skyler investigates Walt’s sudden disappearance. Episode 2: "Thirty-Eight Snub" Directed by: Michelle MacLaren Written by: George Mastras Original Air Date: July 24, 2011

The season opens with the shocking violence of "Box Cutter," establishing Gus Fring not just as a businessman, but as a lethal threat who governs through fear. The subsequent episodes detail a "cold war" where Walt is increasingly isolated, his paranoia growing as he realizes he is no longer indispensable.

Walt delivers his iconic "I am the one who knocks" speech to Skyler, terrifying her with his hubris. To prove a point, Walt buys his son a flashy new sports car, which Skyler forces him to return. Jesse proves his worth to Mike during a cartel standoff. Episode 7: "Problem Dog" Director: Peter Gould Writer: Peter Gould