It is thirty-two turns into what will be the final Pass of the Thread since the Red Star changed its orbit. Never again will Threadfall ravage the world of Pern. But there are further dangers threatening as those calling themselves the Abominators attempt to destroy what they, in their twisted thinking, feel should not be permitted to sully their world. In a series of attacks on Healer Halls, the Abominators strike, leaving chaos.In all the Weyrs, Holds and Halls there are only a handful who realise that danger still exists above the planet, and that all the Dragonriders have achieved could be laid waste in a final, terrible moment.