All the Colors of the Dark

Jane loses her unborn child in a car accident, which strains her relationship with Richard, who is often away on business. She also bears the trauma of witnessing her mother's murder as a child. Her sister Barbara arranges for Jane to consult psychiatrist Dr. Burton, hoping for relief.

In Dr. Burton's office, Jane describes vivid nightmares of a blue-eyed man who murdered her mother and insists she has seen the same man in the waiting room. Dr. Burton remains skeptical about psychiatry but agrees to help address her symptoms. Barbara works for him, providing an internal connection to the treatment.

Jane confides her troubles to Mary, a mysterious new neighbor who recently moved into her building. She also begins to notice the blue-eyed man on her path home, reinforcing her sense of being watched. This marks the start of a more ominous thread entering her life.

The blue-eyed man later attempts to kill Jane with an axe, creating a devastating brush with violence. She escapes the immediate danger, but the threat of this figure continues to loom over her. The attack intensifies Jane's flight from reality and trust.

Under Mary’s guidance, Jane is brought to a castle where J. P. McBrian leads a Satanic cult performing a Black Mass. The ceremony includes the sacrifice of a puppy and Jane is forced to drink its blood, with McBrian compelling himself on Jane in front of the other members.

That night, the cult's rituals culminate in Mary’s sacrifice, a shocking act intended to help Jane enter as a novice and find a way to leave. Jane continues to attend subsequent rituals, realizing the cult's brutal measures are the price of possible freedom.

After awakening in a field, Jane is brought back to J. P. by Mark Cogan, the blue-eyed man. J. P. reveals that Mary sacrificed herself to bring Jane in as a novice, claiming this was the only path to escape the cult. The revelation ties Mark’s role to the darker truth behind Jane's situation.

Jane tries to flee again, but two German Shepherds attack her; Mark then sedates her to prevent her escape. The captivity within the cult tightens its grip as she is restrained from leaving.

Jane wakes in her own bed and hurries to Mary's apartment, only to find it now occupied by an elderly woman. The unsettling change hints at the cult’s reach and the upheaval occurring behind the scenes. Jane’s sense of safety continues to unravel.

One night Jane visits Dr. Burton's office, and although he initially dismisses her experiences as nightmares, he allows her to spend the night at his country house with elderly housekeepers. The next day, Richard returns to find Jane missing and informs Barbara by phone. The tension between belief and disbelief deepens.

Jane wakes to discover that the housekeepers have been murdered and later learns Dr. Burton has been murdered in his car. Mark finds Jane, revealing she is in danger, and he chases her through the woods as Richard follows. This sequence escalates into a direct confrontation that tests Jane’s survival.

Richard confronts Barbara at her apartment after noticing that she bears the same tattoo as Mark's. She tries to persuade him to join the cult, but he shoots her dead just as she leans in for a kiss. The sister's conflict reveals the depth of the cult's reach and Barbara's manipulation.

In hospital, Jane experiences a nightmare in which J. P. impersonates a police inspector and frames her. The police reveal that the cult was a cover for a drug ring, and that Barbara was the mastermind behind it. They also disclose a family inheritance—an inheritance from the man who murdered their mother—left to both Jane and Barbara and used as motive for murder.

Back home, J. P. attacks Richard and Jane, blaming him for Barbara's death. Richard pursues J. P. up to the rooftop and, in a final struggle, throws him off, killing him. The film ends with Jane surviving the revelation of the cult's true nature.