The fourth Robert Langdon series novel written by Dan Brown, the Inferno is now available in App Store and Google Play. Know the thrilling storylines, symbols and factual inaccuracies of another international blockbuster.

Travel through the secret hideaways of museums, cathedrals and monuments in Florence, Venice and Istanbul and experience the adventure through a literary text of Dante's description of hell.

Return of Robert Langdon

Harvard professor Robert Langdon returns as a symbologist waking up inside a hospital room with a head wound and no memory of the last few days. Doctor Sienna Brooks breaks the news to Langdon of his concussion from being grazed by a bullet and stumbled into the emergency ward. Both Langdon and Brooks flee from the hospital when Vayentha breaks in the ward and shoots another doctor.

Inferno is an incorporation of both 'science' and 'codes' combined by Dan Brown to depict a universal scientific threat which is understandable to everyone compared to the complexities of computer programming in "Digital Fortress", anti-matter in "Angels and Demons" and noetic science in "The Lost Symbol."

Inaccuracies and Controversies

Like all of his novels, Inferno is half factual and half fiction which consists controversies and even inaccuracies.

1. Chapter 10: "Vishnu, destroyer of worlds." This was misquoted by Dan Brown from Robert Oppenheimer 1964 recollected interview stating "Now I am become Death, destroyer of worlds."

2. Chapter 39: Reference to 'il Duomino' being a diminuation of dome. 'Duomo' derives from 'domus' or referred as home or house of God and simply means cathedral in Italian not dome. 'Cupola' is the Italian word for dome.

3. Enrico Dandolo's name should have been Latinized as 'Henricus Dandulus' but the marker of his tomb in Hagia Sophia read 'Henricus Dandolo.'

4. Manila, Philippines was referred as the "gates of hell" on the later chapter of the novel quoting "six-hour traffic jams, suffocating pollution and horrifying sex trade."

5. Relation to Maltus' 1798 prediction that the world would be left without food by 1890 due to overpopulation and killing off some people to ensure food supply. In Inferno, a character said "...our current path is pretty simple formula for destruction... the end will arrive very abruptly... it will be more like driving off a cliff." The villain in the book was willing to contemplate infecting humans to sterilise one third of the world's population.

Digital Versions of Novel

Amazon and Barnes & Noble distributed the e-book version and free for readers until March 24, 2013. The digital version of the book is not only available to e-book stores but also in App Store for $14.99 and cover unlocking of novel with the option of buy the book from the Google Play Store.