Mirrorland by Carole Johnstone had kept me guessing about what had happened in Cat and El's childhood and then what had happened to El in the present. It was hard to set this book down. There were some seriously creepy moments and vibes in this story, that made it a great spooky read. I will say that somethings I predicted, did end up coming true, which while I like guessing things correct did make this book feel a tad underwhelming. Overall, this an entertaining and spooky thriller.