A free-form flashback episode fills in the gaps to what happened to Gemma (a.k.a. Ms. Casey)—and showcases a standout performance from Dichen Lachman.

Your outie is kind and doesn't divulge any of the major spoilers from the following article for the latest episode of "Severance." "Severance" has always flirted heavily with the notion of becoming the heir apparent to the throne left behind by "Lost" -- a similar mystery-box experience about a group of characters thrown into strange circumstances and that seems to uncover more questions than answers with every passing season.