Gamache is the experienced and well-respected head of the homicide team for the Sûreté. He is a wise, patient, and kind detective who takes a humanistic approach to his work, believing that most people are capable of murder under the wrong circumstances. He has a history with the village of Three Pines and relies heavily on his carefully chosen team.

Jean Guy is Gamache's second-in-command and a highly skilled homicide detective. He presents a tough, aggressive, and sometimes brash exterior that hides a deep capacity for sensitivity. He works closely with Gamache, balancing the Chief Inspector's patient eloquence with a more direct approach.

Olivier is a prominent and wealthy businessman in Three Pines who owns a popular bistro, a bed-and-breakfast, and an antiques shop. He is well-regarded in the village for his generosity and neighborly demeanor, though he previously left a corporate banking career under strained circumstances. His life becomes complicated when a murder occurs inside his business.

Marc is a newcomer to Three Pines who recently purchased a historic property on a hill overlooking the village. He and his wife are working to renovate the house into a luxury spa to escape their high-pressure city lives. His new business venture quickly creates friction with existing business owners in the village.

Jakob is the unidentified murder victim whose body is discovered in town. He lived an isolated existence in a secluded cabin deep in the woods near Three Pines. He whittled intricate wood carvings and quietly amassed a collection of rare artifacts while keeping himself hidden from the broader society.

Isabelle is a dedicated homicide detective on Gamache's team. She focuses on marginalized narratives and smaller details that help bring complex pieces of evidence together. She takes an active role in training the team's newest member, treating him with a balance of respect and professional wariness.

Paul is a young, inexperienced officer who volunteers to join the homicide investigation in Three Pines. Although other detectives initially laugh off his tenacity, Gamache sees his potential and welcomes him to the team. He learns quickly and provides fresh perspectives on the case.

Gabri is Olivier's partner and the manager of their local bed-and-breakfast. He runs the business out of a genuine joy for providing service rather than a desire for profit. He is deeply integrated into the Three Pines community and actively seeks to maintain peace in the village.

Vincent is Marc's father, a famous doctor who discovered a prenatal test before abandoning his medical career to pursue spirituality in India. He authored a famous book called *Being* and has cultivated a saintly public persona, despite having been estranged from his family for decades.

Clara is a humble and kind artist living in Three Pines with her husband. After years of honing her craft while watching her husband succeed, she finally has an opportunity for her own fame through an upcoming gallery show. She often relies on the village's ethos to guide her moral decisions.

Thérèse is an art expert who heads the property crime division for the Sûreté. Gamache calls upon her expertise when the investigation uncovers a bizarre collection of antiques and artifacts. She uses her extensive knowledge of the art world to trace the origins of mysterious pieces of evidence.

Roar is a woodworker and groundskeeper in Three Pines who emigrated from Czechoslovakia as a refugee. He lives in a unique house he built himself and takes on environmentally friendly labor jobs. He is hired by the Gilberts to clear the woods around their new property.

Dominique is Marc's wife, a woman seeking a quiet, stress-free life in Three Pines after experiencing burnout in Montreal. She helps manage the renovations of the old Hadley house and spends her free time riding and rehabilitating rescue horses.

Carole is Marc's mother, who lives with him and Dominique in the old Hadley house. She assists with the property renovations and harbors long-held family secrets regarding her estranged husband's whereabouts.

Havoc is the son of Roar and Hanna Parra. He works as a staff member at Olivier's bistro and is responsible for locking up the establishment on the night the murder takes place.

Hanna is Roar's wife, a former Czechoslovakian refugee who has built a comfortable life in Canada. She is heavily involved in the local Czech community alongside her husband.

Myrna is a former psychologist who runs the local bookshop in Three Pines. She is an active member of the community who views the village as a necessary sanctuary from city life.

Peter is Clara's husband and an established artist in his own right. He is fiercely protective of his privacy, becoming outraged when the police mandate a search of his home, and occasionally struggles with envy regarding his wife's rising success.

Ruth is the local poet and a volunteer firefighter in Three Pines. She is an eccentric presence who frequently wanders the village with her pet duck, Rosa, and offers cryptic notes to the detectives.

Dr. Harris is the coroner assisting the Sûreté with the murder investigation. She provides crucial forensic details, analyzing everything from the victim's time of death to the trace materials found on his clothing.

Old Mundin is a local furniture repairman who shares a passion for Quebec wood. He conducts business late at night and works out of his own dedicated workshop.

Denis is a well-known, prominent art gallerist from Montreal. He considers featuring Clara's art in a major show but creates friction by expressing bigoted views.

Jérôme is Thérèse Brunel's husband, a retired doctor who harbors a deep passion for cracking codes and ciphers. He uses his analytical skills to help the police decode mysterious inscriptions found on evidence.