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Secret Window (2004)
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Released
Ending spoilers. The accusing stranger is Mort's own creation, and Mort is responsible for the violence. There is a useful idea here about a writer editing himself into the victim of his own story. The difficulty is that the reveal leans on a familiar split-identity mechanism, then spends energy rearranging appearances. Johnny Depp's slouching, resentful performance gives the character more unsettling specificity than the explanation alone.
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About Secret Window
Mort Rainey, a writer just emerging from a painful divorce with his ex-wife, is stalked at his remote lake house by a psychotic stranger and would-be scribe who claims Rainey swiped his best story idea. But as Rainey endeavors to prove his innocence, he begins to question his own sanity.