Worth Watching: ... And don’t miss a new episode of ‘What We Do in the Shadows.’What We Do in the Shadows (10/9c, FX): Sound familiar? Look familiar? The latest twist on TV's funniest show with or without vampires involves the return of Nandor's (Kayvan Novak) previous "familiar" (slave) after 40 years, which only makes the underappreciated Guillermo (Harvey Guillén) more disgruntled. But when a younger, hipper vamp recruits Guillermo to her plush nest, will both master and familiar come to regret his defection? A fun subplot reveals the musical past of Laszlo (Matt Berry) and Nadja (Natasia Demetriou), including an LP titled "Songs of Love & Terror" — including tracks like "(Witches Are) Snitches" and "Telegraph Fever" — which would seem to be a must for any cultist's record collection.