[[caption-width-right:300:Unless you are HotBlooded.]]

->''"I want you to be my date, Rose."''
-->-- '''The Prowler'''

''The Prowler'', also known as ''Rosemary's Killer'', is a SlasherMovie from the year 1981. It was directed by Joseph Zito and the film's gore effects were done by the legendary Creator/TomSavini. Both would later contribute their respective talents to another slasher film, ''Film/FridayThe13thTheFinalChapter''.

Starting at the year 1945, the film opens with a news reel depicting the homecoming American troops from UsefulNotes/WorldWarII. One of these returning troops isn't happy, as his girlfriend Rosemary had dumped him during the war (with a "Dear John" letter, no less).

Several months later at Rosemary's hometown Avalon Bay, he kills her and her new boyfriend during the towns annual graduation dance. He is never caught.

Cut to 35 years later, where the town prepares for its graduation dance once again. There hasn't been one since the events of the opening. The killer decides to partake on the event as well, armed with a pitchfork, a bayonet and a SawedOffShotgun.
!!This film features the examples of:

* AllInTheEyes: The lighting at Chatham house does this effect on Mark when he is ascending the stairs.
* AntagonistTitle: The protagonist is Pam.
* BigBad: [[spoiler:Sheriff George Fraser]] turns out to be the Prowler.
* BigDamnHeroes: Otto appears to shoot The Prowler just as he is about to attack Pam.
* BloodIsSquickerInWater: Used on Lisas's murder by the pool.
* DearJohnLetter: Rosemary's letter to her soldier boyfriend is shown and narrated to the audience before the scene of her and her boyfriend's deaths.
* DeathBySex: Averted, the couple who goes to have sex in the CreepyBasement actually survive the whole thing.
* DoesThisRemindYouOfAnything: The Prowler's murders are awfully sexual.
* DramaticUnmask: Done when The Prowler is struggling with the FinalGirl and his mask comes off.
* FakeOutOpening: Begins with cheerfully narrated faux-retro newsreel footage, transitions to a scene set at a dance, and then quickly turns graphically violent when a couple there sneak off to a rotunda to make out.
* FinalGirl: Pam.
* FlashbackEcho: The revival of the Graduation Dance makes Rosemary's killer snap and start killing again.
* GraveRobbing: The Prowler digs up Rosemary's grave and switches her corpse to Lisa's.
* HoistByHisOwnPetard: The Prowler is done in with his own shotgun.
* HorrorDoesntSettleForSimpleTuesday: Graduation
* KnifeNut: A bayonet is a part of The Prowler's repertoire.
* LockAndLoadMontage: The Prowler is shown preparing his weaponry during the night of the party.
* MenacingStroll: The Prowler takes it slow when he goes after Pam in the dormitory.
* NotQuiteDead: Otto manages to shoot The Prowler. Unfortunately for him, he only pretends to be dead and returns fire.
* PeekABooCorpse: Pam finds a necklace dangling in a fireplace. When she investigates it, Rosemary's corpse drops before her.
* RedHerring: There are plenty older men to pin your suspicions on.
* TheReveal: Who is The Prowler? [[spoiler:Sheriff Fraser, that's who]].
* SawedOffShotgun: One is among The Prowler's arsenal.
* ShowerScene: Sherry is taking a shower when her boyfriend Carl appears and startles her. Things could have escalated into a ShowerOfLove if The Prowler wouldn't have stuck his bayonet through Carl's skull and impaled Sherry with the pitchfork.
* SlashedThroat: Lisa's death.
* SomethingAboutARose: The Prowler [[CallingCard leaves roses]] to the scenes of his crimes.
* TheTheTitle
* TitleDrop: Miss Allison informs the partygoers that there's a prowler seen around the campus, and everyone should stay inside.
* VomitDiscretionShot: Used when Paul has to relieve himself at the party.
* WhatHappenedToTheMouse: We never find out what happened to [[spoiler:Major Chatham]]. He was presumably killed and his body was hidden.
* YourHeadASplode: After [[GunStruggle struggling for his gun]] with Pam, The Prowler dies from a blast to the head.