| Episode # | Title | Director | Original Air Date | Key Scene | | :--- | :--- | :--- | :--- | :--- | | | Box Cutter | Adam Bernstein | July 17, 2011 | Gus kills Victor with a box cutter to prove a point. | | S04E02 | Thirty-Eight Snub (38 Snub) | Michelle MacLaren | July 24, 2011 | Walt buys a snub-nosed revolver. | | S04E03 | Open House | David Slade | July 31, 2011 | Marie’s kleptomania escalates; Jesse throws wild parties. | | S04E04 | Bullet Points | Colin Bucksey | August 7, 2011 | Skyler and Walt pitch a fake gambling story to Hank. | | S04E05 | Shotgun | Michelle MacLaren | August 14, 2011 | Jesse rides shotgun with Mike on the pick-up route. | | S04E06 | Cornered | Michael Slovis | August 21, 2011 | Skyler tells Walt, "Someone has to protect this family from the man who protects this family." | | S04E07 | Problem Dog | Peter Gould | August 28, 2011 | Jesse’s emotional "Problem Dog" speech at a recovery meeting. | | S04E08 | Hermanos | Stephen Williams | September 4, 2011 | Flashback to Gus’s past with the cartel (Don Eladio). | | S04E09 | Bug | Terry McDonough | September 11, 2011 | Walt plants a bug in Gus’s car; Ted Beneke’s accident. | | S04E10 | Salud | Michelle MacLaren | September 18, 2011 | Jesse poisons the cartel in Mexico; Gus says "Salud." | | S04E11 | Crawl Space | Scott Winant | September 25, 2011 | The iconic "Crawl Space" laughter; Marie reveals Walt is Heisenberg. | | S04E12 | End Times | Vince Gilligan | October 2, 2011 | Walt spins a gun; Brock is poisoned. | | S04E13 | Face Off | Vince Gilligan | October 9, 2011 | Walt kills Gus; "I won." |