The Venetian Betrayal is Steve Berry's third Cotton Malone thriller. The book moves around the world and across time as Cotton solves numerous mysteries, escapes certain death repeatedly and assures everyone he really would rather be selling books in Copenhagen. The book weaves the story of Alexander the Great into present day (fictional) events. If you aren't familiar with Berry's books, they bear a slight similarity to the Dirk Pitt series--even sharing the clunky prose.
If you're looking for an exciting adventure, nonstop action and worldwide settings, you will enjoy this escapist romp.