Nine to twelve-year-olds (and their parents) will thoroughly enjoy this book. The perspective is unique, considering that many fantasy novels focus on princes and princesses. Of course, such characters are included in "The Two Collars," but the story centers around the experiences of Krea, a slave girl owned by a sometimes harsh master. Krea, however, is eventually bought by an elderly woman who, Krea discovers, harbors a number of dangerous secrets. As she learns to trust her mistress more, Krea is drawn into a spy war between the king of Bracken and the rebel duke of Folger, Frederick. Yet her greatest trial of all comes not at the hands of Frederick's riders but when she is captured by her old master and all her good mistress's teaching is put to the test. Parents will appreciate the parallels to the Christian life in Krea's relationship with her wise mistress, and children will be enthralled by her adventures.