In the spare wing of a church-run sanatorium, some zealous youths create "the Library," a space where lonely citizens can read one anothers personal diaries and connect with like-minded souls in "dialogues across the ether." But when their scribblings devolve into the ugliest confessions of the macabre, the Librarys users learn too late that a malicious force has consumed their privacy and their sanity. As the city of Turin suffers a twenty-day "phenomenon of collective psychosis" culminating in nightly massacres that hundreds of witnesses cannot explain, the Library is shut down and erased from history. That is, until a lonely salaryman decides to investigate these mysterious events, which the citizenry of Turin fear to mention. Inevitably drawn into the citys occult netherworld, he unearths the stuff of modern nightmares: whats shared can never be unshared.