In a quiet suburban community, a group of therapists begins to receive threatening letters from a mysterious killer who seems particularly interested in the secrets of their patients and the dark past of the professionals treating them. Among them is a psychiatrist who has been grappling with his own demons, but is drawn into a whirlwind of paranoia and confusion when several of his colleagues are brutally murdered.
The atmosphere of mistrust intensifies as the group feels increasingly vulnerable, and the psychiatrist starts to question not only the mental health of his patients but also his own sanity. With each death, the secrets of the clinic become more apparent, revealing a web of betrayal and manipulation that threatens to destroy everyone involved. As he is forced to collaborate with the police and confront his own fears, the protagonist embarks on a race against time to uncover who is behind the murders before he becomes the next victim.
This unsettling tale about the thin line between sanity and madness plays with humanity's primal fears, challenging perceptions of reality and trust in others. With unexpected twists and a complex psychological backdrop, the tense and dark atmosphere offers no respite until the chilling conclusion.