Sadie's husband, portrayed as an attractive and charismatic man with an "intellectual, hipster vibe." His outward charm hides a more complex and sinister personality that unfolds throughout the narrative.

An alter of Sadie, characterized by her manipulative nature and strong sexual presence. She acts as a contrasting persona to Sadie, with a deeper awareness and control over the shared physical being.

Another alter of Sadie, represented as a six-year-old girl with a third-person narrative. Her storyline reflects a history of trauma and an ongoing internal struggle within Sadie's consciousness.

Sadie and Will's 16-year-old niece with a goth appearance and attitude, coming to terms with her mother's death. Her complex emotions and behavior add tension and depth to the story.

The 14-year-old son of Sadie and Will, portrayed as introverted and artistic. He deals with the trauma of being bullied at school and shares similarities with his mother.

The youngest child in the Foust family, a 10-year-old boy who is carefree and optimistic, resembling his father more than his mother. He enjoys playing games and spending time with his family.

A police officer investigating the murder case central to the plot. His role involves providing crucial information to the characters, particularly Sadie, and contributing to the unfolding mystery.

The neighbor whose murder serves as the inciting incident of the story. Her close relationship with other characters fuels suspicions and jealousy, influencing the narrative's direction.

Morgan's husband and a red herring within the plot. His actions and connections to other characters contribute to the mystery and tension.

The young daughter of Morgan and Jeffrey Baines, who discovers her mother's body and becomes part of the custody battle subplot. Her presence adds complexity and potential red herrings to the storyline.