The Slug Queen Chronicles: Season One
S. O. Thomas
She never believed in fairies... until one set its sights on her little brother. Now, she must risk everything to get him back.
On her twelfth birthday, Cricket Kane uncovers a chilling secret--tooth fairies have stopped collecting single teeth and have resorted to kidnapping children instead. When her brother is taken, the fairy leaves a changeling and a toxic black dust in his place. The dust soon infects the rest of her family, but to her surprise, she's immune!
With the guidance of a mysterious cat, Cricket follows the fairy to a magical land where legendary creatures are real. When Santa himself takes her under his wing, Cricket learns she's the only one who can harness the power of the dust to rescue her brother and the other missing children. But doing so might cost her life.
Can she summon the courage and strength to save her family and herself?