If anything, Thoroughbreds bears resemblance to last year's The Killing of a Sacred Deer: upper-middle-class domesticity shattered by an unspecified mental disorder. (Amanda mentions at one point that her psychiatrist is basically guessing what she's afflicted with.) It's possible that this is how those from stable private lives doesn't always equate to stable frames of mind. (Just look at any serial killer; many of them appeared normal to others.)
Anyway, stories and accusations of "affluenza" have been circulating as of late so that might be what's happening in Thoroughbreds. (Amanda admits that she feels nothing when it comes to emotions.) Lily -- although she seems happy with her life -- is hiding behind a mask of her own so neither woman is of sound mind. But to what extent will their true selves become known?
Cooke and Taylor-Joy are great in Thoroughbreds but Anton Yelchin -- who died before the film's release -- is also someone of note here. (It's dedicated in his memory.) As with many of his roles when he was still alive, he showed promise of a long career ahead of him. Sadly, the events of that June day two years ago made that possibility fade away.
Thoroughbreds shows how some people can behave seemingly unprovoked. Much like Heathers before it, the film depicts how far one can go after being pushed for too long. And boy, the results can be messy.
My Rating: ****