Impurity is not a standalone book. All characters, events, places and themes are canonical to the Vengeance series universe. This book is not essential to the understanding of the character(s) as they are portrayed in the main series but can assist by shedding light on where they came from and what they have been through. This story is meant to be consumed after reading Vengeance: Children of Faust, first. Having a reference to past events prior to reading book one may lessen any mystique and curiosity that is being established in the narrative.
Broken home, unforgivable abuse and a sadistic lifestyle. These are only some of the key words that could be used to describe the twisted upbringing of an innocent child known as Lucas. Physical and sexual abuse is a constant in his life, which violently plucks at the seams of his sanity; slowly pushing him closer to the edge. Despite the suffering he endures, he finally learns to cope with his cruel reality after the birth of his sister. Now, it is his one and only goal to keep her ignorant to what happens behind closed doors and find a way for the two of them to escape this prison life. But his parents aren't the only monsters in the world; the shadows have their own agenda that adds a whole new element into his already complicated life. At the end of the day, all that matters to him is keeping her safe.