Walt takes drastic action to protect his secret and Gus. Skyler's efforts to solve Ted's financial problems hit a wall.

Things heat up for Walt in unexpected ways.

Everyone copes with radically changed circumstances.

With Jesse on the run and Mike in hot pursuit, Walt negotiates a bargain with Gus and concocts a disturbing plan to provide for his and Jesse's safety.

Walt and Jesse team up to take on Gus. With Saul's help, Walt finds an unexpected ally.

All bad things must come to an end.

Walt's family worries when he doesn't turn up for Walter, Jr.'s 16th birthday. Jesse is forced to put his lab skills to the test without Mr. White's help.

Walt's team gets creative to obtain the methylamine they need to continue their operation.

Events set in motion long ago move toward a conclusion.

Walt takes care of loose ends; Walt makes a dangerous decision.

Jesse decides to make a change, while Walt and Skyler try to deal with an unexpected demand.

Hank's increasing volatility forces a confrontation with Jesse and trouble at work. Skyler pressures Walt to make a deal. Gus' actions have severe consequences.

Against Walt's advice, Jesse lashes out. Fearing for Jesse's safety, Walt takes drastic action to intervene and tragic event leads to a shocking confrontation.

Hank pushes Gomez to pursue one last lead, while Walt struggles to protect the family. Jesse gets alarming news and rushes to meet with Mr. White.

Walt takes control of business matters; Mike deals with the consequences of his actions.

As Walt and Jesse adjust to life out of the business, Hank grapples with a troubling lead.

The side effects of chemo begin to plague Walt. Meanwhile, the DEA rounds up suspected dealers.

Walt and Jesse find themselves in close quarters with an unhinged Tuco. Marie and Hank comfort Skyler, who is distraught over Walt’s disappearance. Hank pays a visit to Mrs. Pinkman on some not-so-official business.

Walt and Jesse seek advice from a shady attorney when Badger gets in trouble with the law; the DEA believes they have caught up with "Heisenberg" ; Hank returns.

Walt and his family wait for news after he undergoes a PET-CT scan. Walt follows Saul's advice; Jesse's relationship with Jane is put on hold when he and Walt head to the desert for a marathon of cooking.

As Walt explores money laundering options, he and Jesse spar over the profits from their latest deal. Jesse and Jane clash with her father. Walt makes a fatal decision.

Skyler confronts Walt about his secrecy; Jesse falls apart; and Jane's grief-stricken father takes action that results in further tragedy.

Walt settles into his new surroundings; Walt, Jr. wants answers about his parents' relationship; Hank's investigation causes problems for Walt and Jesse.

Walt and Jesse face the deadly consequences of their actions. Skyler deals with a puzzling disappearance, as Marie struggles to help Hank with his recovery.

Skyler develops an unusual solution to her money troubles. Hank enlists Walt to investigate a theory. Walt's impatience with Jesse grows.