Blackie is a fictional character created by author Jack Boyle (October 19, 1881 – October 1928). Blackie, a jewel thief and safecracker in Boyle's stories, became a detective in adaptations for films, radio and television—an "enemy to those who make him an enemy, friend to those who have no friend." Actor Chester Morris was the best-known Blackie, playing the character in 14 Columbia Pictures films (1941–1949) and in a 1944 NBC radio series.

Boston Blackie is the role for which Morris is best remembered. Radio. Boston Blackie—enemy to those who make him an enemy, friend to those who have no friend. — Boston Blackie radio series Concurrent with the Columbia Pictures films, a Boston Blackie radio series—also starring Chester Morris—aired on NBC June 23 – September 15, 1944, as a summer replacement for Amos 'n' Andy.

Lesley Woods played Blackie's girlfriend Mary Wesley; Richard Lane played Inspector Farraday. Harlow Wilcox was the announcer for the 30-minute program. A new incarnation of the Boston Blackie radio series aired April 11, 1945 – October 25, 1950, starring Richard Kollmar. Maurice Tarplin played Inspector Farraday; Jan Miner played Mary. More than 200 half-hour episodes were transcribed and syndicated by Frederick Ziv to Mutual and other network outlets.