"I...I knew," she said. "I kept her secret for a reason, there's something else you should know." She sat down and sighed. "They were twins Geri, Sam..." she looked away. "Sam died, I don't know what happened, but the minute I saw that nurse...it's her sister Lorna, that's why you didn't recognise her, they must have both been mermaids, I only knew Sam was."