History Film / Thoroughbreds

* ChekhovsGun: [[spoiler:Regarding to the sword in Mark's office: Completely subverted!]]

* ApologeticAttacker: An odd version. [[spoiler: Lily regrets trying to drug Amanda and warns her, but Amanda still drinks the drugged OJ and Lily still goes through with the murder.]]
* BitchInSheepsClothing: Lily is way more evil than she initially lets on.
* BlueAndOrangeMorality: The way Amanda sees it, murder is perfectly okay if the victim is a {{Jerkass}}.

** Lily and Amanda took riding lessons together as kids, an extremely {{WASP}}y activity.

* AbusiveParents: Subverted. [[spoiler: At the start, Mark is implied to be this, but by the end of the film it becomes apparent that he's just kind of a jerk and Lily only hates him for selfish reasons.]]

The film's plot involves a couple of upper class teenagers, Amanda and Lily. The pair used to be friends when they were younger, but grew apart over time. Amanda is emotionless and is a loner, while Lily is overly emotional but the more socially and academically gifted of the two. They begin hanging out again initially so Lily can tutor Amanda, but soon develop a plot to murder Lily's emotionally abusive stepfather Mark (Paul Sparks). They also blackmail a loser drug dealer, Tim (Creator/AntonYelchin), into this whole mess.

* MoralSociopathy: Amanda. Sorta. She doesn't feel anything -- not guilt, fear, happiness, sadness, or even anger. However, she says that she can still be a good person, she just has to work harder at it than most. She's still perfectly willing to kill Mark, but says it's because he does more good than bad; the way she sees it, human life isn't inherently sacred, and some people are better off dead. She also claims she only [[spoiler:killed her horse because he was in pain and going to die anyway, and her mother refused to take him to the vet to have him put down. She also tried to do it quickly and painlessly, though it didn't work out that way]]. She's never cruel just for the sake of it, [[spoiler:and willingly takes the fall for Lily in the end]], so she ''does'' seem to follow some sort of code. Her code is just... [[BlueAndOrangeMorality different]].

** In one scene, Amanda plays around with a giant chess set Lily's family has in their garden. Special prominence is given to the knights -- the pieces shaped like hroses.

* MoralSociopath: Amanda. Sorta. She doesn't feel anything -- not guilt, fear, happiness, sadness, or even anger. However, she says that she can still be a good person, she just has to work harder at it than most. She's still perfectly willing to kill Mark, but says it's because he does more good than bad; the way she sees it, human life isn't inherently sacred, and some people are better off dead. She also claims she only [[spoiler:killed her horse because he was in pain and going to die anyway, and her mother refused to take him to the vet to have him put down. She also tried to do it quickly and painlessly, though it didn't work out that way]]. She's never cruel just for the sake of it, [[spoiler:and willingly takes the fall for Lily in the end]], so she ''does'' seem to follow some sort of code. Her code is just... [[BlueAndOrangeMorality different]].

* XMeetsY: A review in the trailer describes it as Film/AmericanPsycho meets Film/{{Heathers}}.

* AbusiveParents: Averted. [[spoiler: At the start, Mark is implied to be this, but by the end of the film it becomes apparent that he's just kind of a jerk and Lily only hates him for selfish reasons.]]

* AbusiveParents: Subverted. [[spoiler: At the start, Mark is implied to be this, but by the end of the film it becomes apparent that he's just kind of a jerk and Lily only hates him for selfish reasons.]]

* AbusiveParents: Subverted. [[Spoiler: At the start, Mark is implied to be this, but by the end of the film it becomes apparent that he's just kind of a jerk and Lily only hates him for selfish reasons.]]

* AbusiveParents: Mark is kind of a jerk.

* NoExceptYes: During his EstablishingCharacterMoment, Tim is confronted by a partygoer for having sex with his high school-aged sister when he was 25. Tim corrects him by saying he dated her when he was 23.

* DownerEnding: [[spoiler:Lily gets away with murdering Mark and framing Amanda. While Amanda is stuck in an institution, Lily moves on and is about to get into college. When Amanda writes a meaningful letter about her dreams, Lily just throws it away without reading it.]]

* EmotionlessGirl: Amanda. She generally creeps everyone out and is completely unfazed by everything. [[spoiler: As well as Lily by the end.]]

* SpoiledBrat: Lily is this, though she denies it. She clearly has a nice car, and at the beginnig of the film Amanda sees an envelope marked "Lily" with a large amount of cash inside of it.

''Thoroughbreds'' is a BlackComedy thriller starring Olivia Cooke and Creator/AnyaTaylorJoy, and written and directed by Cory Finley (in his directorial debut). It was actually filmed in 2016 and premiered at Sundance in 2017, but did not get a theatrical release until March 2018.

Thoroughbreds is notabe for being Anton Yelchin's last movie, he died in a freak auto-related accident exactly two weeks after filming.

* EmotionlessGirl: Amanda. She generally creeps everyone out and is completely unfazed by everything.

* SpoiledBrat: Lily is this, though she denies it. She clearly has a nice car, and at the beginng of the film Amanda sees an envelope marked "Lily" with a large amount of cash inside of it.

* AbusiveParents: Mark is kind of a jerk.