Jacob is a 17-year-old boy diagnosed with autism, characterized by a literal understanding of the world and a need for rigid daily routines. He possesses a brilliant mind and a deep, specialized interest in forensic analysis and crime scenes. He often spends his free time listening to local cases on his police scanner and watching his favorite television program, Crime Busters. Though he struggles to process unspoken social cues, he is highly observant and values absolute honesty.

Emma is the devoted single mother of Jacob and Theo. She works from home writing a humorous advice column for the local newspaper to accommodate Jacob's rigorous daily needs. Her identity is deeply tied to her role as Jacob's caregiver, leading to personal isolation and the unintentional emotional neglect of her younger son.

Theo is Emma's neurotypical teenage son who wrestles with the emotional toll of living in a home entirely structured around his older brother's autism. Feeling overlooked and isolated, Theo frequently breaks into empty houses to secretly observe other families' normal routines. He uses these break-ins to desperately seek the stability and parental attention he lacks at home.

Oliver is a young and inexperienced local lawyer operating out of a small studio apartment above a pizza parlor. Initially lacking knowledge about autism, he approaches his work with determination and shares his life with his poodle, Thor. He is eager to prove himself and steps up to manage complex legal systems for his clients.

Detective Rich Matson is a small-town police officer and devoted father who shares joint custody of his young daughter, Sasha. He takes his role as a protector seriously and is driven by a deep-seated fear of the world's dangers. Though skilled at his job, his strict reliance on conventional behavioral cues shapes his approach to criminal investigations.

Jess is an empathetic graduate student specializing in autism research who tutors Jacob in social skills. Having faced her own childhood struggles with weight and bullying, she brings deep compassion to her work. Her professional competence sharply contrasts with her personal life, as she struggles to set boundaries with her abusive boyfriend.

Mark is Jess's boyfriend, characterized by his cruelty and controlling behavior. He frequently undermines Jess's professional boundaries by crashing her tutoring sessions. During these visits, he takes pleasure in belittling Jacob and using ableist slurs to assert his dominance.

Henry is Jacob and Theo's estranged father who abandoned the family shortly after Jacob's autism diagnosis, unable to cope with the reality of raising a neurodivergent child. He has since moved to California and started a new family, leaving his older sons to deal with his absence.

Sasha is Detective Rich Matson's seven-year-old daughter. She lives with her mother during the week and visits her father on weekends, serving as his primary motivation for his dedicated police work.

Dr. Murano is a psychiatrist specializing in autism who has worked with Jacob since he was three years old. She provides crucial medical insight into Jacob's condition, explaining his need for routine and sensory accommodations to those who misunderstand him.

Mr. Soto is an expert in the intersection of autism and the criminal justice system who holds a master's degree in psychology. As a parent of a son with autism, he designs curricula to educate police departments on neurodivergent communication.

Thor is Oliver Bond's poodle, who lives with the young lawyer in his small studio apartment. Thor provides Oliver with steady companionship during his struggles to build a successful legal practice.