Dan Brown's next book, "Inferno," will be released on May 14, said publisher Double Day, before fans pitched in with tweets and Facebook posts as part of a campaign to reveal the book's title.
Fans were encouraged to share news of the release date via Twitter or Facebook; when they did, their profile picture then formed part of a mosaic revealing the "Inferno" name superimposed over an image of Florence.
"Inferno" will see the return of mainstay central character Robert Langdon, who appeared in "Angels & Demons," "The Da Vinci Code" and "The Lost Symbol."
Its title refers to the first part of Dante Aligheri's "Divine Comedy," the late Middle Ages poem whose author was a notable Florentine and involved in political affairs of the time.
"Although I studied Dante's 'Inferno' as a student, it wasn't until recently, while researching in Florence, that I came to appreciate the enduring influence of Dante's work on the modern world," Brown said in a statement released through Double Day. "With this new novel, I am excited to take readers on a journey deep into this mysterious realm...a landscape of codes, symbols, and more than a few secret passageways."
Official website: danbrown.com/inferno