A single mother enrolls in self-defense classes taught by a handsome instructor. But he develops a terrifying obsession with her and orchestrates a series of increasingly lethal "tests" to see if she has truly learned from his lessons.
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A single mother enrolls in self-defense classes taught by a handsome instructor. But he develops a terrifying obsession with her and orchestrates a series of increasingly lethal "tests" to see if she has truly learned from his lessons.
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