Emma gripped the edge of the sink as a wave of dizziness washed over her. She blinked at herself in the mirror, feeling breathless and worried. OK, calm down. It’s just a dizzy spell. Totally normal; everyone gets them. It doesn’t mean anything. Right? But her mind was busy now, working and thinking, weighing and evaluating, and it was coming up with some things that she didn’t like very much at all. For example, for the past three days, she’d been totally wiped out by two o’clock in the afternoon. She’d chalked the fatigue up to a few poor nights’ sleep… but what about fatigue combined with whole-body weakness, which she’d felt just the day before? Throw in this overwhelming dizziness, and she was starting to see an emerging picture. Emma forced herself to meet her own frightened eyes

