The fourth and final book of the Checkwolf series picks up directly after the events of the previous book. Operatives of Master, the antagonist that Checkwolf has been made progressively more aware of, kick into high gear, and Checkwolf is tasked with trying to figure out exactly what is going on. Though things look increasingly bleak, there is light at the end of the tunnel.... The Checkwolf series is a collection of stories chronicling the activities of Checkwolf's third phase, from its mainstream recognition to its full integration. In Book 4 are some of the darkest moments in the entire series. Expect major changes to occur. Also, the format of the book is altered slightly, as Book 4 is a coherent whole, "number 38", if you will.