John Langdon (typographer) Langdon is known mostly through his association with Dan Brown, and the novels "Angels & Demons", "The Da Vinci Code," "The Lost Symbol, Inferno, and Origin". The protagonist of these novels was named Robert Langdon as a tribute to John Langdon, and he will continue to be so for his next 12 books, an estimate given by Dan Brown himself. Langdon is now a professor of typography and corporate identity at Drexel University in Philadelphia. He continues to do work on ambigrams, as well and fine art works that incorporate language, type, and philosophy. Langdon credits his paternal grandparents for
Robert Langdon (film series) Danny Strong was also hired to collaborate on the adaptation. According to a January 2013 article in "Los Angeles Times", the final draft of the screenplay was due sometime in February, with pre-production expected to start in the mid-2013. In July 2013, Sony Pictures announced they would instead adapt "Inferno" for an October 14, 2016 release date with Howard as director, David Koepp adapting the screenplay and Hanks reprising his role as Robert Langdon. There are many differences between the novel and the film. Robert Langdon (film series) The Robert Langdon films are a series of American mystery thriller movies