Pack your bags and take a trip to Mexico in these radio mysteries. First, Burt Lancaster plots a double cross in "The Big Shot" from Suspense (originally aired on CBS on September 9, 1948). Philip Marlowe is hired to find out what a woman is up to in "The Mexican Boat Ride" (originally aired on CBS on July 30, 1949), and the cops of Dragnet chase a pair of fugitives in "The Big Border" (originally aired on NBC on March 20, 1952). Finally, Dana Andrews tries to thwart the plans of Soviet saboteurs trying to sneak into the US in "The Red Gate" from I Was a Communist for the FBI.

Tee off with four (not fore!) old time radio detective stories set on the golf course. Actor Paul Barnes plays every role in the syndicated mini-mystery Calling All Detectives, and a golf teacher gets too close to a gangster's wife in Boston Blackie (a syndicated episode known as "Carl Grady, Golf Instructor"). As Philo Vance, Jackson Beck spots a clue on the course in "The Red Duck Murder Case," and Frank Race meets an old friend - a golf pro with a jealous husband who's got a violent temper - in "The Adventure of the Fairway Beauties."

Black magic is in the air with four radio mysteries where our heroes are menaced by voodoo. Dan Holiday heads to the bayou to save a man's life in "Death is a Doll" from Box 13, and Ken Thurston investigates when government officials fall victim to zombies in Haiti in The Man Called X (known as "Enough Intrigue to Fill a Book," originally aired on NBC on May 18, 1951). Orson Welles runs a dangerous con in "Voodoo" from The Lives of Harry Lime, and as Johnny Dollar, John Lund tries to protect a family from a curse in "The Voodoo Matter" (originally aired on CBS on August 4, 1953).

Mysteries are hard enough to solve without throwing amnesia into the mix, but that's what our radio detectives have to handle this week. A woman doesn't know who she is, and then drops dead in Jack Webb's office in "The Lady with No Name" from Jeff Regan, Investigator (originally aired on CBS on September 25, 1948). The Saint comes to the aid of a woman without her memory in "The Case of the Blonde Who Lost Her Head" (originally aired on Mutual on November 13, 1949). Dick Powell sings and solves the case of a young man who may have committed a murder and forgotten about it in Richard Diamond, Private Detective (originally aired on NBC on November 26, 1949). And Chicago reporter Randy Stone tries to help a soldier find his memory and his missing wife in Night Beat (originally aired on NBC on July 6, 1951).

We're back in court with four radio mysteries involving lawyers, juries, and trials. A lone holdout tries to convince his fellow jurors of a defendant's innocence in "The Eleventh Juror" from The Mollé Mystery Theatre (AFRS rebroadcast from April 3, 1945), and Mr. District Attorney chases down a robbery ring in "The Case of Murder A La Carte" (originally aired on NBC on March 9, 1949). A defense attorney is the only man who can prove his client's guilt in "The Trigger Man" from The Whistler (originally aired on CBS on August 7, 1949), and Philip Marlowe is hired to clear a man on trial for murder in "The Quiet Magpie" (originally aired on CBS on August 11, 1950).

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).

In this bonus episode, I'm sharing my five favorite installments of Barrie Craig, Confidential Investigator. William Gargan sleuths with a sardonic smile in these radio mysteries, beginning with "The Lost Lady" (originally aired on NBC on June 14, 1953). A client behind bars hires Craig in "For Love of Murder" (originally aired on NBC on August 3, 1954), and Craig helps an old colleague close one last case in "Blood Money" (originally aired on NBC on August 24, 1954). A vacation is a new setting for murder in "Hay is for Homicide" (originally aired on NBC on August 31, 1954), and a visit to see a friend turns into a night at a haunted house in "Ghosts Don't Die in Bed" (originally aired on NBC on September 7, 1954).

Place your bets and ride along with four old time radio mysteries set in the stables and around the racetrack. Boston Blackie doubts a horse is guilty of murder in a syndicated mystery, and international investigator Frank Race tries to find out who's out to make sure a prize racehorse doesn't make it to the winner's circle in "The Adventure of the Vanishing Favorite." A jockey loses a race and his life in Crime and Peter Chambers (originally aired on NBC on August 3, 1954). And John Gielgud and Ralph Richardson are Sherlock Holmes and Dr. Watson in an adaptation of "Silver Blaze."