The murder mysteries that make up this unusual anthology all have one thing in common: the hero or heroine who solves the crime is a Catholic cleric. Perhaps that should not be surprising, for since the time of G. K. Chesterton those who have explored stories with a religious belief or background have tended to place them in the Middle Ages. And during that time most Christians were in one way or another connected to the Catholic church. From Chesterton's classic priest-turned-detective Father Brown to Peter Tremayne's historical Celtic nun and lawyer, Sister Fidelma, religious men and women put aside their professional duties for a moment to take up an altogether different vocation for a short time -- that of detective and solver of crimes unspeakable.