Canterbury's chemist-physician Kathryn Swinbrooke in a second pallid novel of 15th-century England (A Shrine Of Murders, 1993). The country is in turmoil as civil war rages between the houses of York and Lancaster. Before the Earl of Warwick, on the losing Lancaster side, is killed in battle, he entrusts to his aide Brandon a gold and sapphire pendant called The Eye of God. Irishman Colum Murtagh, King Edward's Commissioner in Canterbury, who lives in Kathryn's house, is given the task of recovering the jewel. Kathryn assists him, and together they track Brandon to the dungeons at Canterbury Castle, where he had died of a mysterious fever weeks earlier. Moresby, his companion-in-arms, seems also to have perished, while four others in the fleeing group have disappeared. As Colum seeks to evade death at the hands of his old comrades -- the Hounds of Ulster -- for what they mistakenly perceive as treason, he and Kathryn pursue their quest. It takes them to a church in the plague-devastated town of Sellingham, where they discover the pendant in a nightmare setting, and finally back to Canterbury Castle and treachery in high places. Repetitive background description, a confusing plethora of minor characters and plot contrivances, and a stubbornly lifeless pair of protagonists make this a story only a medievalist could love.