The doctors are in with these four old time radio mysteries. A doctor hires Dick Powell and then jumps out of the window in Richard Diamond, Private Detective (originally aired on NBC on August 23, 1950). Joe Friday is on the trail of a phony physician in "The Big Quack" from Dragnet (originally aired on NBC on October 12, 1950). A crooked doctor sets up fake accidents in "No Insurance" from The FBI in Peace and War (AFRS rebroadcast from November 22, 1951). And Frank Sinatra comes to the aid of a doctor with a dilemma close to home in "Honor Among Thieves" from Rocky Fortune (originally aired on NBC on March 2, 1954).

Lordy, Lordy - your host is turning 40. To mark the occasion, I'm looking back at the old time radio detective shows I've enjoyed the most over these many years. Join me as I revisit stories starring Philip Marlowe, Sherlock Holmes, Ellery Queen, The Whistler, The Saint, Richard Diamond, Rocky Fortune, and Yours Truly, Johnny Dollar, as well as why I love them. (Bear with me for the long intro...this old man tends to ramble on these days.)

We're off to the Caribbean with four old time radio mysteries full of island intrigue. An American professor finds murder on sabbatical in "A Passage to Benares" from Suspense (originally aired on CBS on September 23, 1942). Joan Banks pulls Frank Lovejoy into a dangerous salvage operation in "Chain Reaction" from The Whistler (originally aired on CBS on May 12, 1948). Humphrey Bogart and Lauren Bacall bring their combined star power to tropical thrills in Bold Venture (a syndicated episode known as "Murder in the Yucatán Peninsula"). And finally, Johnny Dollar boards a yacht to act as a bodyguard in "The Time and Tide Matter" (AFRS rebroadcast from February 16, 1958).