You definitely don’t want to buy this one unless you already have or are intending to also purchase the rest of the series. This is definitely one of those series books that needs the rest of the series to complete it. As a stand-alone book this one lacks any sense of beginning-middle-end. You definitely feel like it’s all part of the middle of something bigger. There’s enough explanation offered along the way to allow the reader to more or less follow along, but it’s clear you’re missing out if you haven’t read what came before, and it ends with a cliff-hanger that leaves you feeling incomplete. It opens with two kids (the main characters) racing for their lives through some city they have just mysteriously found themselves in, being chased by bad guys. On the run and in hiding, they need to contact their adult companion while avoiding the supernatural evils who are after them, because there’s been some sort of rift opened between the world of the dead and the world of the living, and they need to put it right. It’s got an online game coordinated with it as a gimmick which will appeal to some.