Riley is a 25-year-old school counselor who returns to her childhood home in North Carolina following her father's death. Her profession reflects her natural empathy and desire to support others. Isolated by grief, she carefully sorts through her father's belongings, searching for connection. Her discovery of a secret post office box prompts an active investigation into her family's history.

Lisa is a former teenage violin prodigy who supposedly died by suicide at age seventeen after being accused of murdering her music teacher. She spends decades living in California under the alias Jade Johnson, attempting to rebuild her life away from the immense pressure of her youth. She works at a record store before eventually returning to music on her own terms.

Danny is Riley's estranged older brother and an Iraq War veteran living with severe post-traumatic stress disorder. He resides in a secluded trailer and refuses to participate in clearing out the family home. He harbors intense anger toward his parents, who consistently dismissed his traumatic childhood memories of hearing gunshots.

Frank is the recently deceased patriarch of the MacPherson family and a former US Marshal. He presented himself as a quiet, reclusive man with meticulously curated collections of pipes, lighters, and violins. Following his death, his secret correspondence and hidden items reveal that he maintained a separate, concealed life.

Jeannie is a local real estate agent and the lifelong best friend of Riley's late mother. She receives a surprise inheritance of a baby grand piano and $10,000 in Frank's will. She steps in to help Riley manage the overwhelming task of clearing out the MacPherson family home.

Verniece is a resident of Mac's RV Park, living there with her husband, Tom. She presents a sweet, somewhat confused demeanor but casually drops unsettling claims about the MacPherson family history. She claims that Riley's mother confided in her decades ago.

Tom is a bitter, abrasive tenant at Mac's RV Park and a former US Marshal who worked with Frank. He harbors resentment toward Frank, believing he was owed the RV park itself. He uses his knowledge of unreleased police reports to taunt Riley about her sister's disappearance.

Deb is the late wife of Frank and mother to Riley, Danny, and Lisa. According to family friends, she was once a vibrant woman but became withdrawn and hollowed out following the tragedy surrounding Lisa.

Steven is Lisa's former violin teacher. He was a demanding and influential figure in her musical career. His murder is the catalyst for the MacPherson family's decades of secrecy and trauma.

Celia is a musician from Portland who forms an immediate connection with Jade. She introduces Jade to her welcoming family and helps her return to playing music by starting a band together.

Grady is the welcoming owner of a local record store who recognizes Jade's extensive knowledge of classical music. He encourages her to pursue a teaching credential and helps her build a new life in California.

Christine is Jeannie's daughter. She actively assists her mother in organizing the massive collection of belongings in the MacPherson house for the upcoming estate sale.

Harry is a local police officer in New Bern and a friend to Danny MacPherson. He checks on Danny's well-being and represents the local law enforcement presence in the town.

Suzanne is the attorney handling Frank MacPherson's estate. She cautions Riley about digging too deeply into her father's personal effects and questions Riley's decisions regarding property transfers.

Matty is a childhood friend of Lisa MacPherson. He appears in photographs from her youth, representing one of her few connections outside the intense pressure of her musical training.

Sondra is the widow of Steven Davis. She runs a blog dedicated to her husband's memory, maintaining a standing reward for information about Lisa's whereabouts, convinced that the teenager faked her death.

Caterina is Lisa's final violin teacher. She provides Riley with professional context regarding Lisa's deteriorating technique during a mysterious gap year in her training.