Gamache’s loyal lieutenant in his 30s, striving for recovery from past traumas and addicted to work; he looks up to Gamache and is romantically involved with the latter’s daughter, Annie.

The abbot of the monastery, a deeply religious man determined to preserve the community’s traditions while grappling with internal conflicts among the monks.

The youngest monk at the monastery, with a beautiful singing voice and a fervent dedication to Gregorian chants.

The abbot’s secretary who discovers the body of the prior and remains deeply devoted to the abbot, often keeping his thoughts to himself.

A monk around Beauvoir’s age who loves hockey and serves as a bridge between conflicting factions within the monastery.

The monastery’s doctor, who views the abbey as a place of healing and remains neutral in its internal disputes.

Gamache’s superior and adversary throughout the series, who tries to undermine Gamache by exploiting Beauvoir’s vulnerabilities.

A modern-day Inquisitor from Rome who arrives to investigate the Gilbertines and seeks a priceless artifact related to Gregorian chant history.