David Rain is faced with the most perilous task yet when Gwilanna returns, this time determined to resurrect the dragon Gawain on the ice cap of the Tooth of Ragnar, unless David and her friends can stop her.

In this story told mostly through letters, children's book author, I. B. Grumply, gets more than he bargained for when he rents a quiet place to write for the summer.

"When Tuesday McGillycuddy and her beloved dog Baxterr discover that Tuesday's mother--the famous author Serendipity Smith--has gone missing, they set out on a magical adventure. In their quest to find Serendipity, they discover the mysterious and unpredictable place that stories come from"--

Who wouldn't want to live in a treehouse? Especially a 13-story treehouse that has a bowling alley, a see-through swimming pool, a tank full of sharks, a library full of comics, a secret underground laboratory, a games room, self-making beds, vines you can swing on, a vegetable vaporiser and a marshmallow machine that follows you around and automatically shoots your favourite flavoured marshmallows into your mouth whenever it discerns you're hungry....