A Play of Heresy - Margaret Frazer

From the pages of the national bestselling Dame Frevisse mysteries. While performing in the theatrical and religious festival of Corpus Christi Day in Coventry, Joliffe is summoned by Bishop Beaufort to use his skills as a spy to uncover the mysteries of the town's elite. A merchant has gone missing, presumed dead-and members of Joliffe's company are implicated in the crime. To uncover the truth, Joliffe must unravel the devilish machinations of a secret sect of heretics bent on destroying the Church.