Reckless (YA) (Kindle)

Reckless is the last name of Jacob and Will.  Their father disappeared into a magical world accessed through a mirror in his study.  Jacob has repeatedly ventured into that world looking for him.  He does not find him and Jacob returns to Will in the real world on and off.  One day Will decides to go into the mirror after Jacob and he is turned into a Goyl--a creature whose skin is stone.  Jacob has a slim chance of stopping Will's total transformation into a Goyl and he tries to save his brother.  Clara, Will's girlfriend, also enters this world and she tries to save Will too.  A cool world is created in this book but it is almost too much at times--unicorns, dwarves, fairies, shapeshifters. . . you name it, this book most likely has it.  I did enjoy it though.