On a warm, golden evening in Rome, celebrities and paparazzi gather at the Villa Borghese as a legendary director premieres his long-anticipated film version of Dante's Inferno. But minutes later the scene is chaos: A man lies dead, the film's star is missing, and a priceless relic has vanished.<br> <br>As the premiere shifts locations—from Rome to San Francisco—detective Nic Costa finds himself on U.S. shores for the first time, charged with protecting a trove of rare Italian artworks and artifacts, as well as an American film actress, Maggie Flavier. When a killer indeed strikes, and with Flavier in danger, Costa races to unravel the chilling clues that connect Dante's nine circles of Hell to the shattering revelations of Alfred Hitchcock's Vertigo. But he may be too late. For a cunning plot is closing in around Costa, guided by a poet's ancient vision of sin and punishment and a killer's genius for terror.<br> <br><i>Previously published as</i> Dante's Numbers.