->''"It seems every year I'm at camp someone loses their head."''
-->-- '''Angela'''

'''''Sleepaway Camp III: Teenage Wasteland''''' is a SlasherMovie released in 1989. Shot back-to-back with [[Film/SleepawayCampIIUnhappyCampers its predecessor]], it follows Angela infiltrating a group of campers to continue to exact her brand of "niceness".

[[Film/SleepawayCampIVTheSurvivor Another sequel]] was made... but not without problems.

!!This film has the examples of:

* AdultsAreUseless: Herman and Lily Miranda, who are the adults in charge of the camp, don't even notice that their campers (and each other) are rapidly disappearing, but this can be partly chalked up to the fact that they'd been split into three teams and separated from one another. Still, the uselessness of the two is a big reason why they die.
** Averted by Barney Whitmore, a genuinely nice guy who cares for the campers.
* AlphaBitch: Cindy
* AssholeVictim: Pretty much everyone who dies except Barney, Greg and Anita. Arab may also be an exception, since the only bad thing she did was curse.
* CarFu: Angel drives over Maria with a garbage truck, and then proceeds to hide and crush her body in its compactor.
* CarryABigStick: Angela interrupts Jan and Herman having sex in a tent, and starts beating and stabbing them with a stick. Snowboy gets the same treatment later.
* CoolOldGuy: Barney Whitmore. While Herman is busy fooling around with a teenage camper and Lily is busy asking the kids to catch their own food (fish) so she can spend more time lazing around, Barney offers the kids hot dogs and bonds with them, [[spoiler:mainly because he didn't have much time to do so with his late son, Sean, from the second movie.]]
* CruelAndUnusualDeath: Angela kills Lily by burying her up the neck and lifting a running lawnmower up and slammed it down on her head.
* DeadPersonImpersonation: Angela steals Maria's identity to infiltrate the New Horizons Camp.
%%* DeathByRacism: Cindy.
* DecoyProtagonist: The opening makes it seem that we'll be following Maria, but then Angela kills her.
%%* DirtyOldMan: Herman.
* EyeScream: A cop who's looking over Angela in the ambulance gets a syringe in the eye.
* FinalGirl: Averted with Marcia, who isn't the sole survivor. She isn't as wholesome as she appears either, [[spoiler:as she reveals to her supposed LoveInterest Tony that she "kinda" has a boyfriend already]].
* FishingForSole: Angela manages to fish out a hockey mask from the water. Right afterward it's remarked that the date is [[Franchise/FridayThe13th Saturday the 14th]].
* FlatCharacter: Campers Anita and Greg get no character development throughout the film and their only purpose seems to be filler roles. This is also the reason Angela kills them.
* {{Jerkass}}:
** Gangbanger Riff, pranksters Snowboy and Peter, sarcastic biker girl Arab, sex kitten Jan, privileged jingoistic snob Bobby, racist Cindy.
** Averted by Greg and Anita, even Angela says that they're nice kids. She still kills them anyway, only because she considers them boring.
** Also averted by Marcia and Tony, [[spoiler:the sole survivors of the massacre.]]
* KarmicDeath: Peter is killed by his own fireworks that he used to scare Angela earlier. She stuffs one into his nose as he sleeps, and lits fuse.
* NWordPrivileges: Two instances where this is disregarded. One from Riff (a black camper) to Tony (a Latino). Another with Cindy (a white Southern girl) to Riff.
%%* NiceGuy: Tony.
* NumberedSequels: With a subtitle.
* OffWithHisHead: Angela kicks Arab inside a tent, and chops off her head as she tries to crawls out of it.
%%* OnlyKnownByTheirNickname: Snowboy.
* PetTheDog: Angela decides to let Marcia and Tony live at the end of the film. This comes back to bite her in the ass when Marcia attacks and (possibly) kills her.
* RichBitch: Cindy
* ShipperOnDeck: Angela lets Marcia and Tony go because she thinks they look like a nice couple.
* ShoutOut:
** The privileged campers are named after ''Series/TheBradyBunch'' kids, while the less privileged campers are named after characters from ''Theatre/WestSideStory'', including the disguised Angela going incognito "as Maria"
** One of the girls manages to fish up [[Franchise/FridayThe13th a hockey mask from the lake at the summer camp.]]
** Camp owners Herman and Lily Miranda are named after Herman and Lily Munster of ''TheMunsters''.
%%* SlidingScaleOfComedyAndHorror
* StraightEdgeEvil: Angela does not smoke, drink, or use illegal drugs and if she catches doing any of those things, look out!
* TokenMinority: Each group of campers has at least one African-American, one Latin American, and one Asian-American. The underprivileged group actually has two African-Americans in Anita and Riff.
* UnwillingSuspension: Angela does this to Cindy by hoisting her up a flagpole. She then lets go of the rope, causing her to die by falling..
* YouKilledMyFather: Turns out Sean from the second movie had a vengeful father (he is not TheHero so he is killed anticlimactically after confronting Angela)
* WhatHappenedToTheMouse: Tawny the reporter confirms the Camp Rolling Hills massacre death count at [[spoiler:19, meaning Molly didn't survive the previous movie.]]