Spook's Sacrifice

The Spook's Sacrifice - Joseph Delaney The 6th book in the series and the 2nd I've read. Received from the publisher via a goodreads giveaway, in return for a review.
Tom, the spook's apprentice, has to go on a long adventure in order to defeat the Ordeen. There are lots of battles along the way, lots of different characters and emotional dilemmas.
Well written and interesting. I'm actually really looking forward to reading this series from the beginning.