A crime novel loosely based on the masses and songs of the 17th century Flemish composer Pierre de la Rue Masses and Motets is a tale composed of four basic interwoven threads, corresponding to the four-part choral writing of Pierre de la Rue's service music. The first thread comes from the diaries of a recently murdered priest, Father Andrea Vidal, former secretary to the notorious Father Marcial Maciel. The second thread is...