Third term at Tall Towers - Lou Kuenzler

It is summer and Clumsy Princess Grace is back at Tall Towers Academy
for her third term. As the sun shines bright on Coronet Island,
Grace is desperate to leap into the beautiful shell-shaped pool
for swimming lessons - with real mermaids! But her best friend
Scarlet is not so sure. She is terrified of the water and begins
to act very strangely. As Grace follows her to the beach one moonlit
night, an enchanted mermaid mystery begins to unravel. With
the help of dolphins, jewels and secrets from long ago, can Grace
protect her friend and save a mermaid too?