This is the second book in the Grave Digger Academy series, and you definitely need to read the first book to know what is happening in this one. It picks up where book 1 left off.
I enjoyed this story, but it felt rushed. The timeline was a a bit confusing as there are jumps in time that are not clearly explained, especially at the beginning. As it got closer to the end, it improved and things made more sense. I still wish we got more of a sense of the day-to-day routine of the school and got more insight into other characters.
I enjoyed the inter-academy games, and adored the squirrel antics!