A grim visitor sends Roz and Harvey into a panic. Elsewhere, Sabrina reconnects with an enemy from her past, and Aunt Hilda's wedding day arrives.
Tropes in this episode:
- Back for the Dead: The woman whose daughter Sabrina rescued from the ice-cream man serial killer in Season Three is murdered by the Uninvited at the beginning of the episode.
- Body Surf: Doctor Cerberus's incubus is exorcised from him, possessing Theo. Nick exorcises it when it acts up, and it jumps from host to host until it tries to possess the Uninvited and gets eaten.
- Do You Want to Copulate?: After marrying the Uninvited, Sabrina Spellman suggests they skip straight to the wedding night as part of a trick to imprison him in the Yellow Room.
- Hazy-Feel Turn: Satan went from being the Greater-Scope Villain of Season 1 and the Big Bad of Season 2, to being — in Sabrina Morningstar's words — a "big teddy bear". However, he's still the Devil, and very much evil incarnate — banishing Sabrina Spellman from Hell for her space-time shenanigans and for bringing an eldritch terror into his domain.
- Humanoid Abomination: The Uninvited manifests as a Disposable Vagrant and goes from door to door, ripping out the hearts of those who refuse to offer it hospitality.
- Killed Off for Real: Dorian Grey has his heart torn out by the Uninvited, which circumvents his immortality and kills him permanently.
- Relationship Sabotage: Sabrina Spellman tries to sabotage Sabrina Morningstar's pending marriage to Caliban by getting him to castrate himself — something she's sure he'll never agree to.
- Supernaturally-Validated Trans Person: When the incubus is exorcised from Doctor Cerberus, it is said that it will seek out a source of masculine energy. Without hesitation, the spirit makes its way to tiny and meek trans boy Theo.
