The Watcher And The Watched Erotic Novel

Petra is more than just a voyeir: she finds her sexual gratification from her intrusion into the secret life of others. Living in a high-rise apartment, she spies on opposite windows and constructs photographic sex fantasies from the scenes she witnesses. Petra becomes obsessed with a sexually adventurous couple and is soon caught up in a spiral of desire and sensual excess. How far will it go?