The promotional photos of "" episode which is wrapped in a musical tone have been released. Called "Brown Betty", the April 29 episode will see Walter dealing with some upsetting news, telling Olivia's niece, Ella (guest star Lily Pilblad), a fairy tale that includes musical performances by Olivia and Agent Broyles.
"We didn't set out to do a musical," executive producer Jeff Pinkner explained. "We set out to do an episode that explored Walter's state of mind - he's dealing with some very upsetting news. When we realized that the way Walter would deal with such news would be to try to anesthetize himself with copious amounts of marijuana, well, singing and dancing became a natural outcome."