An elderly blind man whose manuscript analyzing a film serves as a central element of the novel, discovered after his death by Johnny and his friend.

Johnny's friend who first brings him to Zampanò’s apartment and is known for his hedonistic lifestyle.

A stripper who frequents Johnny’s tattoo shop and becomes the focus of his obsessive interest.

Johnny's mother, whose life and mental health struggles are explored in the novel’s appendices.

A Pulitzer prize-winning photojournalist who documents his family’s experiences in a mysterious house they move into.

Will Navidson's partner, a former model and full-time mother, who deals with the family’s experiences and her own fears regarding the house.

Will's twin brother, a house builder known for his affable nature, who becomes involved in the exploration of the house.

An engineer and friend of Will's who investigates the house and provides support during the exploration.

A professional hunter and explorer enlisted to assist with the mysterious aspects of the house.

An employee of Holloway's and a skilled climber involved in the house exploration.

The 8-year-old son of Will and Karen Navidson.

The 5-year-old daughter of Will and Karen Navidson.