"When Hyacinth mixes hot and cold water in a sink in London with disastrous results, she learns that the city was built on magical rivers that are now London's sewers--and somehow her family is connected to the magic"--
- ISBN10 0399553177
- ISBN13 9780399553172
- Publish Date 23 May 2017
- Publish Status Out of Stock
- Imprint Random House Books for Young Readers
- Format Hardcover
- Pages 304
- Language English