The real key was somewhere else entirely, tucked away where no one would think to look for it. ‘Where would I put it, if I’d built this thing?’ mused Serena. Ylona hadn’t fallen for the decoys either. She was prowling around, ignoring the ghost-keys that filled the air. She didn’t know where to look, then, but she might guess sooner than they would. Teyo stopped watching her. She was a distraction. ‘Somewhere innocuous,’ murmured Fabian. ‘You know what,’ Teyo said softly. ‘I wouldn’t put it in here at all.’ The siblings gazed at him with almost identically thoughtful expressions. They looked eerily alike, when they did that. ‘Genius, Tey,’ whispered Serena. ‘It’s outside, isn’t it? We all ran straight past it, distracted to a man by that shiny, lovely door-thing.’ ‘However,’ said Fab