Hattie B, Magical Vet: The Mermaid's Tail (Book 4)

Another creature needs Hattie's help in the Kingdom of Bellua! This time a mermaid has lost the colour in her tail, and Hattie knows who has stolen it - evil King Ivar of the Imps. Hattie must travel across the desert to collect the mermaid's medicine. Will she make it back in time to save her?