The FBI in Peace and War was a radio crime drama inspired by Frederick Lewis Collins' book of the same name. The show revolved around the stories of the Federal Bureau of Investigation (FBI) and their various cases, focusing particularly on lesser crimes such as robbery, graft, and interstate car theft. Unlike other detective and cop shows of its time, the narrative was told mostly from the point of view of the criminals, giving the show a unique "Howdyduit" approach to crime storytelling. The series starred, among others, Martin Blaine, Donald Briggs, and Alice Frost, and featured the March from Prokofiev's The Love for Three Oranges as its theme music.

The FBI in Peace and War aired on CBS for nearly 14 years, from November 25, 1944, to September 28, 1958. The show was produced and directed by Max Marcin and Betty Mandeville and had a variety of sponsors, including Lava Soap, Wildroot Cream-Oil, Lucky Strike, Nescafe, and Wrigley's. In 1955, the show was the eighth most popular on radio, according to Nielsen ratings. Despite being based on actual FBI cases, the show did not have the endorsement or participation of the FBI itself, and even included disclaimers at the end of each episode to that effect.

Sources: wikipedia.org, otrcat.com