From left, actors Santos Ortega, Hugh Marlowe, and Marian Shockley

With Hugh Marlowe in the title role, The Adventures of Ellery Queen debuted
on CBS radio June 18, 1939, running until September 22, 1940. In 1942, the
series moved to NBC, airing until 1944. From 1945 to 1947, it was heard once 
again on CBS, returning to NBC in 1947 and then to ABC for the remainder of 
1947 with the final program ending in 1948.

Lurene Tuttle (left) and Rosalind Russell during the episode “The
Sisters” on Suspense in 1948

Suspense is a radio drama series broadcast on CBS Radio from 1942
through 1962.focused on thriller–type scripts, usually featuring leading
Hollywood actors of the era. Approximately 945 episodes of the show
were broadcast during its long run, and more than 900 are extant.

Agnes Moorehead during the Suspense broadcast

(click for larger image)

Artist’s depiction of the five lost TBM Torpedo Bombers

The so-called "Lost Squadron", Flight 19, departed at about 2:10 P.M. from the U.S.  Naval Air Station, Fort Lauderdale, Florida. They were on an authorized overwater navigational training flight. A radio message intercepted at about 4 P.M. that
afternoon was the first indication that Flight 19 was lost. They were never heard
from again. A PBM patrol plan was launched at approximately 7:30 P.M to search
for the missing squadron, but this aircraft was never seen nor heard from after it
took-off. Flight 19 remains one of the great aviation mysteries of the Bermuda
Triangle.

The Martin PBM Mariner seaplane

Flight 19’s scheduled navigation exercise

   Bennett Kilpac

Mr. Keen, Tracer of Lost Persons was a 15-minute serial that was one of radio’s
longest running shows, from (October 12, 1937 to April 19, 1955). It aired on the
NBC Blue network until 1947, when it switched to CBS. The program was produced
by Frank and Anne Hummert. Mr. Keen and Mike Clancy were primarily homicide detectives. Bennett Kilpac (above) was the longest-running Mr. Keen; Philip Clarke
took over late in the run. and Jim Kelly was Mike Clancy. The series sponsors
included Whitehall Pharmacal Company, Dentyne, Aerowax, RCA Victor and
Chesterfield cigarettes.

Inner Sanctum Mysteries, a popular anthology series that aired from Jan. 
7, 1941 to Oct. 5, 1952 (NBC/CBS), was created by producer Himan Brown 
and was based on the generic title given to the mystery novels of Simon 
and Schuster. The anthology series featured stories of mystery, terror 
and suspense, and its tongue-in-cheek introductions were in sharp 
contrast to shows like Suspense and The Whistler. The early programs 
opened with Raymond Edward Johnson introducing himself as, “your
host, Raymond.” The program’s familiar and famed audio trademark
was the eerie creaking door which opened and closed the broadcast.