Inferno is a 2013
mystery thriller novel by American author
Dan Brown and the fourth book in his
Robert Langdon series, following
Angels & Demons,
The Da Vinci Code and
The Lost Symbol. The book was released on May 14, 2013 by
Doubleday. It was number one on the New York Times Best Seller list for hardcover fiction and Combined Print & E-book fiction for the first eleven weeks of its release, and also remained on the list of E-book fiction for the first seventeen weeks of its release.