Spoiler alert for those who've never watched Breaking Bad, the AMC TV series that started five seasons ago. Episode one: chemistry teacher Walter White discovers he has cancer with only two years left to live. To provide security for his wife and a son with cerebral palsy he begins making and selling methamphetamine. As he descends into the Albuquerque drug trade, segments explore the questionable morality of the anti-hero. With just two episodes remaining, here's the question: is there any way to write a satisfying ending? Matt Zoller Sietz is TV critic for New York magazine, editor in chief of RogerEbert.com and author of The Wes Anderson Collection.