Pern XVII: A mysterious epidemic is striking dragons and the next deadly cycle of Threadfall is only days away. Somehow, dragonrider Lorana must find a way to save all the dragons – including her own beloved Arith – before they succumb to the sickness, leaving Pern undefended. No doubt the first colonists, who originally bred the dragons, possessed the advance technologies to find a cure. But over the centuries, that knowledge was lost. Five hundred years in the past, a scientists foresees that a diseasE may ultimately destroy the dragons and she is determined to find a way to change the future. Now two brave women, separated by hundreds of years but joined by bonds transcending time, become unknowing allies in a desperate race for Pern’s survival. Cover art by Led Edwards.