January is a 29-year-old romance author suffering from severe writer's block. Following the death of her father and the subsequent discovery of his infidelity, her optimistic worldview has shattered, leaving her broke and newly single. She moves into her father's secret second home to clear it out and desperately attempt to finish a manuscript she owes her publisher.

Augustus is an acclaimed author of bleak literary fiction and January's former college rival. He lives next door to her at the lake and writes dark stories that rarely end positively. He generally maintains a cynical outlook on life but demonstrates unexpected emotional intelligence and observation skills when interacting with January.

January's late father was once viewed as the perfect, supportive parent who constantly worked to keep his family's spirits high. His sudden death leaves behind the shocking revelation of a secret second home and a mistress. These discoveries completely upend his daughter's understanding of their family history.

Pete is the warm, inviting owner of the local bookstore and coffee shop in North Bear Shores. She runs a weekly book club out of her pink house and serves as an anchor in the town's literary community. Her welcoming nature immediately draws January into the local social circle.

Shadi is January's bold and loyal best friend from college. Though she lives far away, she remains closely connected through texts and phone calls, offering a listening ear as January struggles. She works in a kitchen and openly pursues her own romantic interests.

Sonya is the woman who was secretly involved with January's father. She resides in North Bear Shores and attempts to reach out to January after the funeral. To January, she serves as a painful living reminder of infidelity and shattered family illusions.

January's mother is a two-time cancer survivor whose illnesses shaped much of her daughter's fiercely positive worldview. She maintained her marriage despite hidden flaws and relies heavily on the emotional strength projected by her family.

Jacques is January's ex-boyfriend from New York. Their relationship initially fit perfectly into January's idealized version of romance, but it fell apart when she could no longer maintain a relentlessly positive persona following her father's death.

Anya is January's literary agent. She frequently contacts January via text and email to press her for the overdue romance novel, adding professional pressure to January's personal crises.

Maggie is Pete's wife who helps host their weekly spy-novel book club. She shares her home with Pete and several dogs, providing a warm environment for the local community.

Dave is a local resident who survived the New Eden cult as a child. Augustus seeks to interview him to gather authentic, dark details for his literary fiction project.

Dave's mother is a woman who briefly joined the New Eden compound in the 1990s seeking a sense of belonging. She successfully escaped with her son before the group met a tragic end.

Grace is a woman whose sister died as a member of the New Eden cult. She meets with Augustus to discuss her sister's experience as part of his research process.

Augustus's late father was an abusive presence whose violent actions profoundly shaped his son's cynical worldview. His behavior left lasting scars on his family.

Augustus's late mother attempted to protect her son from his father's abuse but failed to escape the marriage. Her inability to leave deeply affected her son's understanding of love and loyalty.

Naomi is a figure from Augustus's past who suddenly appears in North Bear Shores. Her presence triggers significant anxiety in Augustus and causes January to question her standing with him.

Ricky, affectionately nicknamed "The Haunted Hat" by Shadi, works in a kitchen alongside her. He becomes the focus of Shadi's romantic pursuits throughout the summer.

Kayla is an old friend of Augustus who occasionally contacts him by phone. Her calls bring up stressful personal matters that Augustus attempts to keep private.

Tessa is a woman Augustus briefly dated in college. Their relationship occurred during the same period he and January were rivals in their creative writing program.