Ghost in the Machine

A customer at a Cleveland computer store who becomes the target when Karl copies her address book. She teams with Bram Walker to connect the murders to the scanned page, and she helps to unplug devices during the siege. Her resilience and resourcefulness drive the plan to stop the killer from inside the home.

A computer hacker who partners with Terry to outsmart Karl's digital spree. He uses his technical know-how to trace the murders to the address book and helps devise a plan to trap the killer with a virus and a lab-based setup. His expertise is crucial in translating digital clues into action.

Terry's son who realizes the killings follow the order of his mother's address book. He helps identify the pattern and supports Bram and his mother in stopping Karl. His curiosity and bravery keep the investigation grounded in family stakes.

Babysitter hired to look after Josh; she becomes the third victim, electrocuted by an exposed electrical cord when the dishwasher explodes. Her fate underscores the unpredictable danger of tech-enabled violence in the home.

Terry's boss at the address book demonstration; he becomes the first victim when his microwave irradiates the kitchen. His death marks the killer's reach into domestic spaces and tech-enabled carnage.

Josh's best friend, a perceptive child who witnesses and survivals the escalating household danger. He contributes to the awareness of the pattern and supports the adults in their efforts to disable the killer's devices.

A detective investigating the murders who remains skeptical of the supernatural explanation. He represents the procedural angle of the story, pushing the investigation forward even when the truth seems extraordinary.

Newswoman covering the siege and the unfolding events. Her reporting provides a public-facing view of the crisis and helps frame the techno-horror for the audience.

Terry's mother who experiences shock during the siege. Her character reflects the family impact of the digital threat and grounds the story in personal stakes.