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.

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.

After Mallory is kidnapped at her fencing meet, Jared and Simon search for her near an old quarry and find themselves amidst dwarves and goblins.

Bruised and battered, Jared, Simon, and Mallory return home to find their home ransacked and learn that Mulgarath has made off with their mother and Spiderwick's Guide. With only the help of Thimbletack, Hogsqueal and Byron, the Grace kids have to defeat Mulgarath and his goblin army. But they have to rescue Arthur Spiderwick from Lorengorn and the elves first.

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

Nick and Laurie have a giant problem, and it's a lot bigger than they originally thought. When Taloa sent them off to find her sisters, they discovered a single fire breathing giant, but as it turns out, that one giant is just the tip of the proverbial iceberg. According to NoSeeum Jack, the blind giant killer who helped Nick, Laurie, and Jared dispatch the original giant, there are hundreds, possibly even thousands of giants underneath the surface...

Celebrate the 20th anniversary of the #1 New York Times bestselling Spiderwick Chronicles and get ready for the series soon to be streaming on Roku with this eighth and final installment in the fantastical adventures featuring updated text.
The Wyrm King was previously published under the series title Beyond the Spiderwick Chronicles.

Nick and Laurie thought their worries were behind them when they drove all the giants...