Cold Fire is the third part of Tamara Pierce's latest quartet, The Circle Opens, and follows the highs and lows of Daja's experience as a teacher. Daja, first introduced in the Circle of Magic quartet, is visiting friends with her teacher Frostpine and is unexpectedly thrown in at the deep end as she grudgingly becomes a teacher to twins, Nia and Jory. However, Daja soon realises that knowledge is a gift that has to be shared and helps the twins as they begin their first steps into magic. As if teaching was not enough, Daja is caught up in a spate of fires where she has to use all her strength and power to save those in trouble. As she soon discovers things aren't always as they seem when she befriends Ben, a seemingly heroic man that helps Daja rescue those caught up in the fires. As with many of Tamara Pierce's books, there is a surprising twist which results in Daja and her new students being tested and leaves the reader surprised and shocked by the end result. Once again another great book by Tamara Pierce which will satisfy old fans and new readers alike.