Our star this week was called "the world's greatest living radio actress" by Orson Welles.  She's Academy Award winner Mercedes McCambridge, and we'll hear her as Martha Ellis Bryant on Defense Attorney.  On the podcast this week, we'll hear her fight to clear her wrongfully accused clients in "Client Joshua Masters," first broadcast on ABC on April 10, 1952.

The story you're about to hear is true.  It's Jack Webb's legendary police procedural Dragnet, bringing actual Los Angeles Police Department cases to radio.  Webb is Sgt. Joe Friday, with Barton Yarborough as Sgt. Ben Romero in "The Big Late Script," originally aired on NBC on July 26, 1951.

William Gargan played several detectives on radio and television, and he could draw from his real-life experience as a private eye for his characters.  This week, we'll hear Gargan star as Barrie Craig, Confidential Investigator in "Blood Money," first broadcast on NBC on August 2, 1954.

Chester Morris reprises his screen role as Boston Blackie, reformed safe cracker turned sleuth, who operates outside of the law but always to help the innocent.  We'll hear Blackie in "Alice Manletter - Dead or Alive," originally broadcast on NBC on August 4, 1944.

Stop the presses!  This week, we'll hear Staats Cotsworth as Casey, Crime Photographer - ace cameraman and amateur sleuth.  Listen as Casey fights crime and makes the late edition in "The Chivalrous Gunman," originally broadcast on CBS on August 14, 1947.

Match wits with master detective Ellery Queen and see if you can solve the mystery before he reveals the solution.  We're breaking the fourth wall this week as you (and celebrity guest detective Peggy Lee!) get a chance to nab the culprit in "One Diamond," starring Howard Culver as Ellery Queen, first broadcast on ABC on May 6, 1948.

The Line-Up, one of radio's finest police procedurals, takes listeners behind the scenes of the San Francisco Police Department as its determined detectives track down criminals and close cases.  Bill Johnstone stars as Lt. Ben Guthrie, with Jack Moyles as Sgt. Pete Carger in "Singer's Husband Killed," first broadcast on CBS on July 1, 1952.

Radio detectives don't come more hard-boiled than Pat Novak For Hire.  Jack Webb stars in one of his first big radio hits as a character who is anything but Joe Friday.  We'll hear "Sam Tolliver," originally broadcast on ABC on April 23, 1949.

Ol' Blue Eyes is back!  Frank Sinatra stars in Rocky Fortune, as a "footloose and fancy free young gentleman" whose odd jobs always seem to lead to trouble.  The Chairman of the Board headlines "Murder on the Aisle," originally broadcast on NBC on November 24, 1953.

Before he itemized an expense account as Johnny Dollar, Bob Bailey solved radio mysteries in Let George Do It.  Freelance sleuth George Valentine finds his clients through a newspaper ad, offering to take on the jobs that are too dangerous for regular folks.  We'll listen as somebody new writes him about a gig in "Cry Murder," first broadcast on Mutual on July 19, 1948.