James Pinckney Miller was an American writer whose pen name was "JP Miller". He was a leading playwright during the Golden Age of Television, receiving three Emmy nominations. A novelist and screenwriter, he was best known for Days of Wine and Roses, directed by John Frankenheimer for Playhouse 90 (1958) and later the 1962 film of the same name directed by Blake Edwards.

Playhouse 90 is an American television anthology drama series that aired on CBS from 1956 to 1960 for a total of 133 episodes. The show was produced at CBS Television City in Los Angeles, California. Since live anthology drama series of the mid-1950s usually were hour-long shows, the title highlighted the network's intention to present something unusual: a weekly series of hour-and-a-half-long dramas rather than 60-minute plays.