Mr. Keen, Tracer of Lost Persons was one of radio’s longest running shows,
airing for 15-minutes on Tuesday October 12, 1937 to April 19, 1955. It was
first heard on the NBC Blue network until 1947, when it switched to the CBS
radio network becoming a weekly half-hour show. Bennett Kilpack (above)
was the original detective Mr. Keen and Phil Clarke took over the role late
in the series run.
Ann Thomas and Bennett Kilpack (1947, CBS)