After 5 hundreds of years of inactivity from these Dead, the neat and calculating vampire Isadora relates to Venice to wreak havoc, feeding on the Naturals and turning the Unnaturals towards them.
Randall Munroe's book https://tasneemsahl082238.aboutyoublog.com/30757751/the-smart-trick-of-young-adult-kindle-books-that-no-one-is-discussing