We're visiting some of the world's biggest and busiest cities this summer, and while we're in town we'll rub elbows with some of their resident sleuths. Our series kicks off with the Big Apple and three radio mysteries set on the streets of New York. Dick Powell suspects there's more to the story of a Central Park hit and run case in Richard Diamond, Private Detective (originally aired on NBC on August 29, 1949); Danny Clover investigates "The Joan Fuller Murder Case" from Broadway is My Beat (originally aired on CBS on November 17, 1950); and as Captain Kennelly, Everett Sloane looks into an alleged case of self defense in 21st Precinct (originally aired on CBS on July 17, 1954).

As "Bud Smith," the amnesiac Superman is a home run-crushing, strike-out hurling baseball phenom! But "Big" George Latimer still hunts for the missing Man of Steel and the crew at the Daily Planet is looking for Clark Kent. This epic adventure continues with the next five chapters, originally aired on Mutual between June 11 and June 17, 1947.

Happy 4th of July and a happy 250th birthday to the USA! In honor of this momentous occasion, I'm sharing an encore presentation of four American history mysteries.

Henry Fonda recreates his role of Young Mr. Lincoln in a radio version of the classic film on Academy Award (originally aired on CBS on July 10, 1946). Honest Abe is a lawyer who must clear his wrongfully accused clients of murder. Lee Bowman plays Allan Pinkterton, one of America's most celebrated detectives, as he investigates a case of robbery and murder in "The Pinkerton Man" from The Cavalcade of America (originally aired on NBC on November 18, 1946). A recently released convict falls in with a gang that forges correspondence from historical figures in "Letters from Aaron Burr" from The Whistler (originally aired on CBS on November 20, 1949). And "the man with the action-packed expense account" hunts for a stolen original copy of the Gettysburg Address. Bob Bailey stars as Yours Truly, Johnny Dollar in "The Meek Memorial Matter" (AFRS rebroadcast from March 3, 1957).