'The pearl,' hissed Taran. 'Is it there? Give it to me!'
With Tullor safely behind glass at the Sealife centre, and now news of evil mermaid Queen Taran, Lizzy almost believes that her troubles are over. Only, she can't help thinking that it's not like Taran to give up.
When her sister, Rose, starts behaving very strangely, Lizzy wonders whether Taran might be up to her old tricks. before long, it's a race against time as Taran's final, terrifying plot to gain total power unfolds.