The Darkness Within

After dying of cancer at seventeen and being brought back to life by an evil witch who turned her into a monster, Samantha Thompson thinks she's finally gotten past all the tragedy in her life. Now she's part of a coven of good witches who are helping her and her boyfriend, Ethan Anderson, learn to use the powers they received from other witches. Aside from the fact that Sam and Ethan are still in hiding from their old lives--the ones they had before Sam was brought back to life--things couldn't be better. Sam and Ethan are inseparable. What could go wrong?
Magic.
Ethan's magic came from a witch who'd turned as evil as possible, and though his coven thought he'd be fine, the more he uses his magic, the stranger he starts acting. The magic inside him is changing who he is. One minute he's Sam's sweet, perfect Ethan and the next, he's a complete stranger. Even with all her witchy power, Sam is helpless against the magic corrupting Ethan. Can Sam find out what's wrong with him before she loses him to dark magic forever?