Mermaids, A family secret and a city beneath the waves. When Kelly-Ann goes to stay with her Grandmother for the Summer, she does not expect to be caught up in a mystery. After her Grandmother disappears in the night, Kelly-Ann decides to follow her tracks and begins to unravel the truth. Can Kelly-Ann help set this mystery to rest? This is a tale of mermaids, magic and mystery, set along the rugged cliffs of Cornwall.