Hazel is a thirty-year-old Korean American private investigator living in New York City. She struggles financially and socially, operating out of a messy office and distancing herself from her family's conservative expectations. Motivated by past trauma where she received no institutional support, she works outside the system to help vulnerable people. She accepts a lucrative missing persons case that tests her skills and forces her into unfamiliar environments.

Madeline is an elegant, wealthy socialite whose family owns significant property around Lake George. She hires Hazel to locate her missing goddaughter, offering a $100,000 reward for a quick resolution. She presents a demanding and intense exterior, regularly criticizing Hazel's methods while insisting on immediate results.

Kenny is Hazel's childhood friend and current roommate in Chinatown. He actively studies for his New York City Police Department exam after being financially cut off by his wealthy family for choosing a career in law enforcement. He cares deeply for Hazel, frequently cooking meals for her and tracking her location for safety.

Dr. Mackenzie is the traditional headmaster of the Saint Agnes care home in upstate New York. He runs the facility with strict rules, prohibiting cell phones and resisting modern surveillance systems. He is highly protective of the institution's legacy and expresses extreme skepticism toward outside investigators.

Sonia is the director of child services at Saint Agnes. She worked her way up from a cleaning position over twenty-five years to reach her leadership role. She presents herself as a confident, elegant, and warm professional who quickly builds a friendly rapport with Hazel.

Andrew is a handsome man from a wealthy family living on the Upper East Side. He relies on his family's trust fund and spends his time attending high-society events connected to his father's philanthropy. He quickly takes a romantic interest in Hazel, inviting her to dinners and offering her a glimpse into a luxurious lifestyle.

Robert is a local detective handling Mia's disappearance in Lake George. Though officially constrained by his department's limited resources and pressure from superiors, he quietly assists Hazel off the record. He maintains a pragmatic view of his small town and recognizes the difficulty of investigating powerful local families.

Mia is a thirteen-year-old orphan who resided at Saint Agnes before disappearing six months prior to the start of the novel. She possesses a highly talented singing voice and dreams of performing on Broadway. Her unexplained absence from the care home drives the primary investigation of the story.

Mr. Goolsbee is the long-time choir teacher at Saint Agnes. He gave private vocal lessons to Mia and considers her the best singer he ever taught. He appears nervous during questioning but insists he checked on her the night she vanished and knows nothing further.

Neil is a former Navy sailor from Texas who works as the security coordinator for Saint Agnes. He lives in a secluded cabin off-campus and took the initiative to install limited security cameras around the perimeter of the facility.

Penny is a young resident at Saint Agnes who roomed with Mia before her disappearance. She provides Hazel with a crucial piece of physical evidence that features a strange blue stamp on the back.

Gene is Hazel's disgruntled client who hired her to investigate his wife's infidelity. Upon seeing the photographic evidence she gathered, he reacts with aggressive denial and demands a refund, highlighting the difficult nature of Hazel's career.

Preston is a prominent, wealthy donor to Saint Agnes who controls the DuPont family trust fund. He maintains significant influence in Lake George and holds considerable sway over his son's lifestyle and activities.

Patrick is Madeline's personal assistant. He runs specific errands for his wealthy employer, including delivering investigation funds and a vehicle to Hazel on the street.