Returning to New York in 1920, Wright took any freelance work that came his way but lived a restless, impoverished existence and, in his displays of temper and anxiety, alienated many of his old friends. By 1923, he was seriously ill, the result of a breakdown from overwork, he claimed, but in reality the consequence of his secret cocaine addiction, according to John Loughery's biography "Alias S.S. Van Dine". Confined to bed for a prolonged period of recovery, he began in frustration and boredom reading hundreds of volumes of crime and detection. As a direct result of this exhaustive study, he wrote a seminal essay, published in 1926, which explored the history, traditions and conventions of detective fiction as an art form. Wright also decided to try his own hand at detective fiction and approached Maxwell Perkins, the famous Scribner's editor whom he had known at Harvard, with an outline for a trilogy that would feature an affluent, snobbish amateur sleuth, a Jazz Age Manhattan setting, and lively topical references. In 1926, the first Philo Vance book, "The Benson Murder Case," was published under the pseudonym "S.S. Van Dine". Within two years, following the publication of "The Canary Murder Case" and "The Greene Murder Case," Wright was one of the best-selling authors in the United States.