After he introduced stories on Suspense as the "Man in Black," Joseph Kearns moved into starring roles on radio's outstanding theater of thrills. We'll hear him in "The Case for Dr. Singer," a tale of atomic espionage ripped from the headlines (originally aired on CBS on June 28, 1951). Then, he's one of history's most notorious murderers in "A Story of Poison" (originally aired on CBS on September 13, 1955). And as a bonus, we'll hear him as an arrogant murderer who concocts a less than perfect alibi in "The Sheriff's Assistant" from The Whistler (originally aired on CBS on April 7, 1947).