In terms of music this is a bit of a weaker episode in my opinion, the Scooby-Doo inspired chase sequence was fun but the "song" was just okay. And the ghostfcker song at the end is cool for using Charlie´s VA, but both aren´t the best the show has produced.
Storywise it´s very fun though, especially for the Millie Blitz scenes. It´s also sad to see how much Blitz hates himself, especially fresh after the "break up" with Stolas.
It was fun to see the origin of Millie, and how different she was.
And to see just how much of an impact Blitz had both on her and Moxxie.