the City of Guardian Stones

Hyacinth has just saved London, and possibly the world, from a magical conspiracy stretching back centuries. Not bad for a week of summer holiday.

Life isn't exactly back to normal though Her absent-minded mum is behaving even more strangely than usual, and before Hyacinth can figure out why, she and her new friends, Little Ben and Oaroboarus (the giant swimsuit-wearing pig) have a new mystery to solve.

When Hyacinth discovers that ancient Roman stones are being stolen from all around London, she'll need all the help she can get to stop the dastardly Minnie Tickle...

Author: Jacob Sager Weinstein

Publisher: Walker Books

Released Date: 2018

ISBN: 9781406368864