On her seventeenth birthday, Katie discovers a locket and decides to wear it for good luck. But when her boyfriend Isaac finds out she cheated on him— with their mutual best friend Mitch, no less—he dumps her, leaving her devastated.
And then a miracle happens. The locket burns on Katie's chest and she feels herself going back two weeks in time, to the night she cheated with Mitch. At first, Kate is delighted to be a better girlfriend to Isaac this time around. But as other aspects of her life become inexplicably altered, she realizes that changing the past may have had a dangerous effect on her present.
Can she make things right before the locket destroys everything—and everyone that she loves?
Katie is such an awesome character. She is very quick witted and caring. Isaac was selfish at times and didn't seem to care for Katie like he should. A lot of the comments that he made, were so mean and I wanted to punch him in the face. Mitch was such a sweet guy and I couldn't help loving him. Sarah was a great friend and wanted to keep close with Katie. As a fan of Doctor Who, I love anything to do with Time Travel in Young Adult novels. The Locket was amazing, because who hasn't made a mistake that they wanted to change. That is what made the premise of The Locket so amazing. I also liked that there were changes in what Katie knew, because of the time travel and that made it more intense. I was engrossed in this book from the very beginning. The ending of the story was so intense and amazing. I can't wait for more from Stacey Jay. I always end up loving her books so much. I recommend this to someone looking for an intense and amazing book that is full of magic.