When there's a magical mystery to be solved, the young mermaid detectives are right on the case. The friends volunteer to help the water fairies tend to their underwater gardens. While they work, a fairy tells the sad tale of the beautiful mermaid Aroona and her human love, Sir Topaz. All the mermaids believe the tale—except for Jasmine, who thinks it's just a silly story. But when Jasmine discovers the trail that leads to Aroona's lost treasure, she sets off to discover the truth.

"Familiar themes of friendship, jealousy and bullying abound in this undersea world—with a generous sprinkling of sea jewels and stardust on every page. . . . An alternative for those fairy-loving transitioning readers who are looking for a new magical adventure." —Kirkus Reviews on Rosa and the Water Pony

Katy Kit studied English at the University of London and went on to become a children's book editor. She moved to Bath, England, in 1996, where she now lives with her husband, David, and their two young children.

After a degree and ten years working in graphic design, Tom Knight eventually realized that true happiness lies in drawing pictures in a shed at the bottom of the garden for a living. Brought up on a healthy diet of Tintin, the Beano, and good country air, Tom finds his inspiration all over the place, constantly getting under his feet and making a mess. Tom lives on Mersea Island with his splendid wife, Tabby, and their two boys, Archie and Seth.