Set after The Daemons. Chapter one written with R.J. Anderson. The nation is terrorized by unearthly storms and natural catastrophes. The Doctor himself goes mad and has to be restrained. And out in the desert in Jordan, a living Sphinx rises from the sands. Everything points ot the fulfillment of William Butler Yeats' prophecy of a terrifying new era of bloodshed. Is the world on the edge of apocalypse? Twenty-One Episodes.