The Return: Shadow Souls (The Vampire Diaries #2)

Elena Gilbert's love, the vampire Stefan Salvatore, has been captured and imprisoned by demonic spirits who are wreaking havoc in Fell's Church. While her friends Bonnie and Meredith explore the evil that has taken over their town, Elena goes in search of Stefan. In order to find him, she entrusts her life to Stefan's brother, Damon Salvatore, the handsome but deadly vampire who wants Elena, body and soul. Along with her childhood friend Matt, they set out for the slums of the Dark Dimension, where Stefan is being held captive. It is rumored to be a world where vampires and demons roam free, but humans must live enslaved to their supernatural masters...