A thriller that plays with the boundaries of reality, authorship, and identity, Secret Window follows 'Mort Rainey,' a writer just emerging from a painful divorce with his ex-wife. When a psychotic stranger named 'Shooter' arrives at his remote lake house claiming Rainey stole his story idea, Rainey endeavors to prove his innocence, only to find himself questioning his own sanity as Shooter's threats turn more violent and ominous.