The Enemy is an action-packed read for fans of the horror genre and survival stories. Near-misses and multiple plot-lines add to the suspense. Not excessively gory, the book does feature a cast of boil-infested, flesh-eating, zombie-like adults whose sole purpose is to capture and feed on children. There are even a couple of adults who survived the illness that do the same, treating their quarry like livestock. The main characters have each lost their families and suffered through unspeakable horrors, but are generally a tight-knit group because of it. They work as a team to survive, with clear leaders that guard the group's welfare at all costs. Trouble arises when Arran's group meets up with another group of kids that have conflicting priorities. Fans will be eager to learn what happens in the next installment in the series, The Dead. Language is occasionally strong (h-ll, d-ck, sh-t, pr-ck, b-astard, cr-p, a-s, b-tch).