Pet

"Pet" is a psychological thriller that tells the story of a lonely animal control worker named Seth who becomes obsessed with a waitress named Holly. After she rejects his advances, Seth kidnaps Holly and holds her captive in a cage at the animal shelter where he works. The two engage in a twisted game of psychological warfare as they delve deeper into each other's dark pasts. As the tension builds and the truth about their troubled histories is revealed, it becomes clear that neither of them is what they seem. Will Seth be able to "save" Holly from her own demons, or will their obsession with each other lead to a deadly fate?

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Some movies that have similar genres and were produced around the same time as Pet include Split, Gerald's Game, Alone, Get Out, Pet Sematary, The Boat.