A review by adj1920
The Spook's Revenge by Joseph Delaney

If you've followed the series thus far, it's worth giving this a read. Unfortunately, rather than give readers a true ending, the author basically hits the reset button to leave the door open for a sequel. Lo and behold, not two weeks after I finished this I saw that there will be a spinoff series beginning in 2015. This was a pretty entertaining series overall, even if the YA target audience meant that the writing was a bit oversimplified. The problem is that the author keeps changing the stakes, and there are very few permanent consequences. I won't be investing my time into the next iteration of this and, if you're a fellow adult reader, I'd recommend against it.