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
Dr. Priestley Dr. Priestley Dr. Lancelot Priestley is a fictional investigator born in July 1869 in a series of books by John Rhode After 1924 Dr. Priestley took over from Dr. Thorndyke as the leading fictional forensic investigator in Britain, and featured in 72 novels written over 40 years, solving many ingenious and misleading murders. Dr Priestley's involvement is usually at the request of the police but only if the case piques his scientific curiosity; having little, or no, interest in criminal justice. ""Hanslet had brought many problems which confronted him in the course of his duties to Dr. Priestley's notice, usually