What do you do when bad mermaids go on the loose? Uh: call in some good mermaids! Beattie, Mimi and Zelda are enjoying a summer on land (with legs) when an urgent CRABAGRAM arrives. Some seriously evil mermaids have broken out of jail. And it’s a fair guess they won’t be sitting on rocks combing their hair. Can the girls save the day with their clam car, a talking seahorse and the power of friendship on their side?

Witty mystery fiction where sassy mermaids save the day

Magical mysteries, fabulous fashion and pesky piranhas

By Sibeal Pounder, who writes the bestselling Witch Wars

Witch Wars was shortlisted for the 2016 Waterstones Prize

Sibeal was a World Book Day featured author for 2019

“Twenty thousand laughs under the sea. Dive into a fin-tastic, madcap adventure that’s funnier than being tickled by a giant octopus.” David Solomons

“Funny, fishy and FANTASTIC (and that says a lot coming from someone with a mermaid fear).” Pamela Butchart

“Stylish, packed with laughs and boasting a fab talking seahorse. The Little Mermaid meets Gossip Girl.” Abi Elphinstone

“You’ll laugh your tail off – another winner from our favourite author.” Rob Biddulph