Fringe

Season 2, Episode 20

Episode Title: Brown Betty

Air Date: 2010-04-29

Overview:

When Peter disappears, Walter seeks solace in marijuana. In that state of mind, he and Astrid babysit Olivia's niece Ella, and Walter tells her a fairy tale of a gentle inventor, a stolen glass heart, a detective looking for true love, and a mysterious group of bald men known as the Watchers.