An exciting new adventure series for young readers from Carnegie Medal winner Katya Balen, author of October, October and The Light in Everything

Clem and her friends Ash and Zara are members of the Thames and Tide Club! Every weekend they go mudlarking by the river, searching for treasures that have washed up on the shore. Clem has found old things, new things and a whole heap of rubbish. But one day, she finds something really special. Something magical that belongs in the river and must be returned to its rightful owner ... or else.
Before they know it, the Thames and Tide Club are on the weirdest, wildest, underwater-iest adventure they could possibly have imagined on a mission to save Underwater London!

Katya Balen studied English at university. She is now a writer and is co-director of Mainspring Arts. Her debut novel, The Space We're In, was highly commended for the Branford Boase Award 2020. Her second book, October, October, published to critical acclaim in the same year and is the winner of the Yoto Carnegie Medal 2022. Her third book, The Light in Everything, was published in 2022. When she's not writing books or planning projects, she likes to scroll through dog-rescue websites, bake and attempt to keep all her house plants alive. She lives in London with her partner and their dogs Raffi and Mouse.