ChristopherUrswickemustunmaskthetraitorlurkingamongstMargaretBeaufort’ssupposedlyloyalfollowersinthisgrippingmedievalmystery.October,1471.EdwardIVsitsontheEnglishthrone;theHouseofYorkreignssupreme.Withheryoungson,HenryTudor,inexileinFrance,MargaretBeaufort,CountessofRichmond,sheltersdeepintheshadows,secretlyplottingforthedaywhenHenrycanbecrownedtherightfulking.Butashersupportersarepickedoffonebyone,itbecomesclearthatatraitorlurkswithinMargaret’shousehold.Whenoneofhermostloyalhenchmen,JacobCromart,ismurderedinStMichael’sChurch,wherehehadclaimedsanctuary,Margaretordershersharp-wittedclerk,ChristopherUrswicke,tofindoutwhohasbetrayedher.Howcouldamanbekilledinsideachurchwherethedoorsarealllocked,withnosignofanintruderorweapon?IfheistoprotectMargaret’sremainingsupportersfromsufferingasimilarfate,Urswickemustsolveabafflingmysterywherenothingisasitfirstappears.