Eric Ambler (1909-1998) was a British author of spy novels and thrillers. He is widely regarded as one of the most influential writers in the genre, and his works are credited with helping to define the modern spy novel. Ambler's novels often featured ordinary people who find themselves in extraordinary circumstances, and his stories often explored the moral ambiguities of espionage. His works often featured a strong sense of realism, and he was known for his meticulous research and attention to detail. Ambler's most famous works include The Mask of Dimitrios, Journey into Fear, and The Light of Day. His novels have been adapted into films, television series, and radio plays, and his influence can still be seen in modern spy fiction.