Portal Through the Pond (Empty World Series Book 1)

They said her grandfather was dead. They said her grandmother was crazy. Christy knows better.

When 13-year-old Christy's grandmother dies, she leaves Christy a mysterious packet of information revealing an amazing secret: the pond in her yard is in fact a portal to another world. And what's more, her grandfather had disappeared in that world nine years earlier.

Christy is determined to honor her grandmother's wish to keep the secret, even if it means alienating her best friend Trevor. However, things spiral out of her control when nosy classmate Rob accidentally crosses into other world, the grown-ups think he has drowned, she's forced to tell Trevor, and Danny--the nine-year-old deaf boy next door--follows her through the portal to rescue Rob.

Will Trevor be able to convince the grown-ups to trust Christy to get them all home? Or will they let the police drain the pond, stranding the children in an alien world?