Sibéal Pounder is the author of the bestselling Witch Wars and Bad Mermaids series of books. Her debut, Witch Wars, was shortlisted for the Sainsbury's Children's Book Award and the Waterstones Children's Book Prize. Bad Mermaids Meet the Witches was a 2019 World Book Day title and a Sunday Times bestseller and has been optioned by Sony Animation. She has also written Beyond Platform 13, a sequel to Eva Ibbotson's The Secret of Platform 13, and her latest book Tinsel is all about a young girl called Blanche Claus and asks the question: what if a long time ago we all got the Santa story a bit wrong? Previously Sibéal worked as a journalist, writing for publications including the Guardian and Vogue Online and was a philanthropy columnist for the Financial Times.Jason Cockcroft is a supremely talented illustrator. He won the first ever Blue Peter Award in 2000 with A Pilgrim's Progress. He lives in Addingham, West Yorkshire.

Spies, mermaids, TV celebrities, haunted Scottish castles and hamstars (half hamster, half starfish) meet with explosive results in the fourth book of the hilarious illustrated series from the bestselling author of Witch Wars

Illustrated throughout by award-winning illustrator Jason Cockcroft, this is a perfect combination of fun, fashion and adventure for aspiring mermaids

_______________'You'll laugh your tail off' - Rob Biddulph_______________The fourth book in the hilarious Bad Mermaids series for kids aged 7+, from the bestselling author of Witch WarsMeri Pebble, professional spy mermaid, has a new mission. She's going to be a personal assistant to the Sushi Sisters (famous for their notorious appearance on reality TV programme Catwalk Prawn, and for driving around in a submarine shaped like a giant bit of sushi). Beattie, Mimi, Zelda and Steve the talking seahorse are coming along for the ride as the least convincing glam squad ever. Meanwhile, on land, their human friend Paris is moving from California to a castle in Scotland complete with a loch rumoured to be haunted by a mermaid. The gang soon realise there's something o-fish-ally fishy about the Sushi Sisters - but could it lead them all the way to Paris's loch? And what has the loch got to do with things like mercats and hamstars (half hamster, half starfish)? Things are getting sea-riously weird in the fourth book in Sibéal Pounder's Bad Mermaids series!