Nadia Coste is presented as having written for children and "Prime" as its first young adult novel. It is good, in fact, to warn the potential reader of the real target of this story the first "immortal" and the first werewolves that everything here is a teenage audience. Not that history is restricted to that age but the quality of writing, and pace for less "Express" of the story actually corresponds to a young audience. Yet there was a subject for a much more interesting and novel, especially, better crafted and written. The characters deserved more thickness, alas they are devoid of any psychological depth. The story would have won in more progressive combos and rich, unfortunately everything is quickfire as if the author had been limited by a dead line too close or a number of pages to absolutely not exceed. In short, everything is so incredibly fast and we can only regret this precipitation but recognize, on the other hand, it may please the target audience. Personally, I find this totally inadequate.