[[quoteright:226:http://static.tvtropes.org/pmwiki/pub/images/promnight4_2062.jpg]]
'''''Prom Night IV: Deliver Us From Evil''''' is a SlasherMovie from 1992.

A psychopathic KnightTemplar Father Jonas kills two Hamilton High students during the prom night of 1957. After several failed attempts to help him, the church places him in sedated coma. Over three decades later, he awakens and continues his mission to kill sinners.

!!This film has the examples of:

* AgonyOfTheFeet: Mark is stabbed through a foot when he's on the roof.
* AutoErotica: Featured in the opening, with Father Jonas as the mood killer.
* BerthaInTheAttic: Father Jonas, before he gets loose.
* TheCavalryArrivesLate: The police and the church representatives arrive at the scene after Meagan defeats Father Jonas.
* ChristianityIsCatholic
* ContinuityNod: Hamilton High is not the main location of the film, but it does appear twice.
* DoesNotLikeShoes: After awakening from his catatonic state, Father Jonas spends rest of the movie barefeet.
* EyeAwaken: After being placed in the ambulance, Father Jonas opens his eyes.
* FauxYay: Laura gets intimate with Jennifer to test if she's gay.
* FinalGirl: Meagan.
* ImpaledPalm: Father Jonas has stigmata, which fuels his religious fanaticism.
* KissOfDeath: Father Jonas kisses Jeff before crushing his skull.
* LingerieScene: Provided by Jennifer and Laura as they prepare for their graduation party.
* LivingStatue: After Father Jonas finishes his prayer at the church and leaves, a statue of Jesus turns its head.
* MaybeMagicMaybeMundane: Father Jonas, who is either [[AxCrazy murderously psychotic]] or [[DemonicPossession actually possessed]]. Considering how nonchalantly he crushes a guy's head with his bare hands, probably the latter.
* {{Mooning}}: Jeff moons the Hamilton High prom attendees.
* NeckLift: Father Jonas lifts Jonathan by the neck before killing him.
* NumberedSequels
* OffscreenTeleportation
* OnceIsNotEnough: After temporarily blinding Father Jonas, Meagan runs away to get the revolver.
* PsychoticSmirk: Father Jonas smirks at Mark before he starts pursuing him.
* TheScourgeOfGod: Father Jonas specifically targets "whores and sinners", so that he can deliver their souls to Jesus Christ.
* SequelHook: Father Jonas [[NotQuiteDead is alive]], and as he opens his eyes, so does Meagan, hinting a connection of some kind between them.
* ShovelStrike: Meagan seemingly defeats Father Jonas by whacking him repeatedly with a shovel, and then trapping him in the burning woodshed with it.
* ShowerScene: Provided by Laura after she has had sex with Jeff.
* SinisterMinister: Father Jonas.
* SlashedThroat: Lisa has her throat slit.
* StockFootage: Several of the 1957 prom scenes from the second film are recycled, as well as an establishing shot of Hamilton High from the third film.
* WeaponOfChoice: Father Jonas's sharpened cross.
* YouLookFamiliar: Brock Simpson appears again, this time playing Father Colin.