Philo Vance was a detective radio show created by S. S. Van Dine, that tells the story of a refined intellectual with a particular taste for art and culture. His character, while being a courteous and intelligent private detective, also has an innate contempt for inferiority in all forms. Throughout the series, Philo Vance displays his astuteness and great knowledge in areas such as psychology, art, and various academic subjects. The radio series, unlike the original books, portrays Philo Vance as a more relatable and approachable character, all while maintaining his intellectual prowess and unique characteristics. The show also features notable characters such as District Attorney Markham, and Ellen Deering, Philo's secretary and right-hand woman.

Philo Vance aired on NBC from 1945 to 1950, and later on ZIV Syndication in 1946 with Jackson Beck taking on the titular role. John Emery and Jose Ferrer also portrayed Philo Vance during the early broadcasts. The radio series had a total of 104 episodes, with only a handful known to still exist today. In addition to the radio show, Philo Vance's character gained popularity with an earlier appearance in 12 crime novels published during the 1920s and 1930s. During that time, Vance's character was portrayed in films and radio, making a significant impact in various forms of media.

Sources: archive.org, wikipedia.org, otrcat.com