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.

Walt ignores Skyler's demands, furthering the rift between them and pushing her to break bad. Still suffering from panic and anxiety attacks, Hank crosses a line at work.

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.

Skyler gets involved with Walt's business. Hank struggles with his recovery. Jesse makes a startling discovery after meeting a girl at group therapy.

Walt attempts to form a new alliance as he plans his next move. Skyler pushes Walt towards a business opportunity, in hopes of protecting the family.

When Jesse goes missing, Walt fears the worst. Skyler has an unlikely reunion. Hank shares some bad news with Detective Tim Roberts.

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 and Jesse pursue an unlikely business partner. The DEA filters through various leads in hopes of finding something.

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

While Skyler's past catches up with her, Walt covers his tracks. Jesse continues to struggle with his guilt.

Things heat up for Walt in unexpected ways.