The emerald mask

Gabriella, Darren, Fiona, and Mack are Changers, a magical race that can transform into mythological creatures, from werewolves and selkies to lightning birds and spirit foxes. And they ve just saved the world from a warlock bent on destroying life as we know it. Now, the Changers are training hard to control their growing powers. Something that seems easy for everyone except Gabriella. Gabriella loves the speed and strength that comes with being a jaguar, so much so that her transformations are out of control. If she changes during a soccer game, everyone at school could learn her secret.