The season four finale of What We Do in the Shadows (S4E10), " Sunrise, Sunset ," resets the status quo by having Baby Colin transform back into an adult energy vampire after discovering his past, while Nadja's nightclub goes up in flames, quite literally. Disillusioned by the lack of change, Guillermo takes the household’s renovation money and seeks out his friend Derek to finally become a vampire himself. You can watch the full episode on FX or stream it on Hulu.