Kaiser is one of Geo's best friends from high school and a detective in the present who plays a crucial role in supporting Geo emotionally, offering a contrast to darker influences in her life.

Calvin is a charming yet dangerous convicted serial killer whose past relationship with Geo and actions drive much of the narrative tension and plot developments.

Dominic is a character whose mysterious connection to Geo and actions as a killer are pivotal to the unfolding of the story’s external conflict and key plot twists.

Angela, Geo and Kaiser’s best friend in high school, is the first victim of Calvin, whose death sets off the chain of events central to the plot.

Ella is an incarcerated criminal who forms a protective and business-centric relationship with Geo during her time in prison.

Cat is Geo’s close friend in prison who provides support through personal struggles and serves as a parallel to Geo’s own journey.

Walt is Geo’s father whose loving and forgiving nature influences Geo’s self-perception and her journey toward self-acceptance.

Claire and Sasha are victims of the serial murders whose connections to Calvin and similarities to Geo add layers to the story’s mystery.

Henry and Emily are young victims in the narrative whose tragic deaths emphasize the stakes and emotional depth of the conflict.

Kim is Kaiser’s partner on the police force involved in both personal and professional complexities that help advance the murder investigation.