Charlie is a seventeen-year-old high school junior living outside New Orleans. Before the amnesia loops begin, she withdraws from her friends and family following her father's arrest for fraud. She lives with her mother and younger sister in a modest house, carrying the heavy responsibility of caring for her sibling due to her mother's alcohol addiction. She maintains a tough, detached exterior to protect herself from further emotional pain.

Silas is a seventeen-year-old student who plays on his high school football team at his demanding father's insistence. He possesses an artistic side, evidenced by the many photographs decorating his bedroom walls. Despite his popularity and athletic status, he feels disconnected from his peers and remains intensely focused on his former relationship with Charlie.

Brett is a former financial executive currently serving a fifteen-year sentence in a minimum-security prison for fraud and illegal trading. His criminal actions led to the collapse of his firm and the seizure of his family's luxurious estate. He expects loyalty from his daughters despite the devastation his choices caused them.

Clark is a wealthy financial executive and Silas's father. He previously worked alongside Brett Wynwood but avoided prison when their firm collapsed by providing evidence to authorities. He pushes Silas aggressively into sports, prioritizing athletic achievement and a specific vision of masculinity over his son's artistic interests.

Cora is a quiet, socially isolated student at the local high school. Her peers cruelly mock her appearance, earning her an unkind aquatic nickname. She maintains a low profile, though Charlie finds herself inexplicably drawn to the quiet girl during the amnesia loops.

Brian is an athletic student at Charlie and Silas's high school. He begins dating Charlie after her breakup with Silas, offering her a casual distraction from her family problems. He views Silas as a rival and frequently attempts to assert dominance over him in social situations.

Avril works as a guidance counselor at the high school. She leverages her position of authority to pursue a predatory, physical relationship with Silas. She acts possessive and frequently demands his time and attention during school hours.

Janette is Charlie's younger sister. Following her father's incarceration and the loss of their home, she relies heavily on Charlie for basic care and transportation. The family's sudden drop in social standing causes significant friction between the two sisters.

Mrs. Wynwood is Charlie and Janette's mother. She copes poorly with her husband's arrest and the subsequent loss of their family wealth. She spends her days heavily intoxicated on the sofa, leaving the household management and parenting duties entirely to her eldest daughter.

Landon is Silas's younger brother. He observes the amnesia-induced changes in Silas and often acts as a helpful buffer, creating distractions to protect his brother from their demanding father or angry coaches.

Janice owns and operates a tarot reading shop in the French Quarter. She projects an eccentric, mysterious aura and gives Charlie an unsettling reading that results in an impossible blank card. She recently purchased Charlie's former family home at auction.

Ezra is the housekeeper for the Nash family. She possesses a warm, welcoming demeanor and happily prepares meals for the teenagers, offering a stark contrast to the coldness of Silas's actual parents.

Amy is a high school student and friend of Charlie. She provides Charlie with transportation and attempts to pry into her confusing romantic life, though she quickly becomes frustrated by Charlie's lack of coherent answers.