Lucy can't believe her eyes when she wakes in the night to find Goldie and Bonnie - two tooth fairies - on her pillow. The fairies tell Lucy that their job is to collect children's teeth, replace them with fake ones - and make a potion that creates golden Goodness.

But there is trouble in fairyland. A selfish sprite wants all the Goodness for herself instead of sprinkling it around the world. With the help of the Tooth Fairy Queen, can Lucy and her new friends stop the thieving fairy - before the gold has all gone?

There are 208 pages in this book. This book was published 2006 by Pan Macmillan .

Gwyneth Rees has written under different names for many best-selling children's series, but Mermaids is her first work for Macmillan. When she's not writing, Gwyneth is a psychiatrist in a London hospital. She lives in west London with two cats.