The Secret Power

Morgana Royal is small, fey and enormously rich, and in a shed on the Sicilian shore below her Palazzo d'Oro she has built the White Eagle, a silent air-ship driven by a force that renews itself as it works. Roger Seaton, the English scientist she once turned her back on, is hiding in a hut above a California sanatorium with a discovery of his own, a way to wipe nations off the map from a distance...