James, a 53-year-old knifemaker, runs a workshop he founded that employs three bladesmiths.

He strives to support his depressed wife and be a good example to their daughter who is going through a troubled teenagehood.

Unaccepted by the in-laws because of his temper, James has learned to keep a low profile and roll with the punches, occasionally taking refuge in alcohol. When his wife leaves home, James loses his bearings and his composure. He rejects the help of the police and embarks on a roadtrip with an uncertain destination, opening a breach in which evil and violence intrude.

An accident is enough to tip him over the edge and unleash his killer instinct, encouraged by the evil spirit that has attached itself to him.

Torn between his impulses that the entity exacerbates and his duty as a father and husband, James sinks a little more with each step.

Charlie is 14 years old and already has the strong character of his father. When her mother becomes too disturbed to take care of her, fights at school increase and she takes refuge in her father's unconditional love .

Charlie wants to try everything, to experience everything, she is interested in the supernatural, in TV shows like all the young people of her age, and their violence inspires her. Drawn by her father into a roadtrip that takes her away from school and therefore from problems, she feels before him the unhealthy presence that accompanies them and puts their nerves on edge.

More than finding her mother, she understands that she must free her father, and herself, from this harmful influence.

But the temptation for a teenage girl to turn a blind eye to her father's murders and follow in his footsteps is great.

Sally, 54, was a caring and well-liked ICU nurse until a fatal incident forced her to abandon her career.

Guilt quickly drives her into depression, and the first signs of psychosis appear after a few months without a job.

Sally gives in to both jealousy and paranoia, but she also becomes easy prey for the cult to which her friend Karen belongs. Under her influence, Sally leaves her family behind to return to her hometown, Boston, following a chaotic path along which encounters and experiences push her further into madness.

She is the only one with a direct link to the spirit that haunts her husband and daughter, and her struggle to regain her lucidity is the key to their survival.

Ash Stills, dead at 58, was an arrogant psychopath who scoured ten states and left a bloody trail before being caught and sentenced to the electric chair.

The day of his execution, the last look he sees is that of James Anderson, filled with terror.

It is not by chance if his spirit attaches itself to James and if Ash decides to make James his instrument so that he continues to spread death in his place: the two men are connected through Sally. As his influence on James grows, the killer's spirit becomes more and more powerful and the curtain between the two worlds threatens to be torn apart at any moment.

James becomes the possibility for him to return and resume his murderous spree. He has no scruples, no limits. Cop's wife, James' friends, even Sally is on his deadly list.