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

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

Walt, Jesse, and Mike struggle over the future of their business, as occupational hazards weigh on Jesse.

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

Walt celebrates another birthday. Skyler contemplates her options, and an associate puts a crimp in Walt and Jesse’s business strategy.

Walt and Jesse formulate a new business plan. Walt shares a secret with Marie.

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

As Walt deals with the aftermath of the Casa Tranquila explosion, Hank works to wrap up his investigation of Gus’ empire.