This is a collection of new essays on Peter Tremaynes Sister Fidelma novels which feature Sister Fidelmas attempts to solve a wide range of crimes often murders that occur under especially mysterious conditions. The novels set mainly in 7th century Ireland also include a great deal of history which is not surprising given that the author is actually Peter Berresford Ellis a noted Celtic historian. Some of the essays analyze aspects of the novels focusing especially on the protagonist and her partner in detection and ultimately husband Brother Eadulf. Other essays place Fidelma and the novels within the tradition of detective fiction. Still others explore the historical intellectual spiritual and geographical contexts for her labors. Also included are accounts of the authors career the International Sister Fidelma Society and the biennial Sister Fidelma conferences held in Cashel Ireland.