Triploidy

<p><strong>A medical mystery ... and a threat from beyond the stars.</strong></p><p>For Jon and Marianna Knox the birth of their daughter Persephone marks the happiest day of their lives. </p><p>Until they learn that Persey is suffering from a rare but fatal condition called triploidy.</p><p>Her doctors are baffled and with good reason-because the source of the little girl's genetic malfunction is not of this Earth. It lies out beyond the orbit of Saturn.</p><p>And it's coming for all of us.</p>