Claim: The 21st Precinct was a replacement show for My Friend Irma on CBS radio in the 1950s which starred Everett Sloane.
Evidence: It was initially a summer replacement for My Friend Irma. 21st Precinct (aka Twenty-First Precinct and Twenty First Precinct) was a police drama broadcast on CBS radio from July 7, 1953, to July 26, 1956. Everett Sloane