Within the gardens of Dumbarton Oaks, famous Washington D.C. estate and site of many historic diplomatic meetings, lies a portal to another world where competing dynasties of witches battle, as time ticks backward, for control over a magical clock and a winged horse as part of an ancient prophecy. Twelve year old Genevieve’s integral role in the prophecy and the fate of this world -- and her own -- is revealed in the quest to find her missing single-parent mother, assume her own powers as a witch, and return home before time runs down in seven days.
