DiTerlizzi, Tony

Three ordinary kids, Jared, Simon, and Mallory Grace, have entered another world -- without leaving this one!.

The Ironwood Tree pits Jared and Simon Grace against quarry-dwelling dwarves who have kidnapped their sister, Mallory. The children must escape these and other dangers that surface as a new arch-villain arises at the book's conclusion.

With goblins, trolls, and the house boggart all trying to get them, the Grace children turn to Great Aunt Lucinda for help.

The Ironwood Tree pits Jared and Simon Grace against quarry-dwelling dwarves who have kidnapped their sister, Mallory. The children must escape these and other dangers that surface as a new arch-villain arises at the book's conclusion.

With goblins, trolls, and the house boggart all trying to get them, the Grace children turn to Great Aunt Lucinda for help.

When Mallory and Jared attempt to rescue Simon from goblins, they use a magical stone which enables them to see things that are normally invisible.

When the Grace children go to stay at their Great Aunt Lucinda's worn Victorian house, they discover a field guide to fairies and other creatures and begin to have some unusual experiences.