Rachael's hands trembled slightly as she clutched the small white stick, her pulse hammering in her ears. The office restroom smelled faintly of antiseptic and leftover coffee, but all she could focus on was the little line that confirmed it: positive.

Not hers, of course. Her sister's pregnancy had provided the perfect camouflage, the perfect opportunity. She'd gotten the sample while her sister was visiting, convinced she could keep it quiet just long enough. And now... here it was, all the ...