This was a fairly decent, retro-style, monster-of-the-week episode. Even though at least half the time the primary actors were not on screen, it rang a few nostalgia bells with me. However, I'm still baffled as to why this kind of episode would be aired while the main arc is heading for critical mass. I just hope the writers and showrunners don't screw up the finale.
I should note that this was not entirely a filler episode. There are a few developments related to the main theme of the season and the finale.
I should note that this was not entirely a filler episode. There are a few developments related to the main theme of the season and the finale.