Before he was Atticus Finch, Oscar-winner Gregory Peck made five trips to Suspense. On “radio’s outstanding theater of thrills,” Peck was frequently cast as an everyman in over his head in dangerous situations, trying to keep his cool as events unraveled around him. We’ll hear him as a husband dangerously smitten with a new housekeeper in “The Lonely Road” (originally aired on CBS on March 21, 1946) and as a man who may have murderous multiple personalities in “Murder Through the Looking Glass” (originally aired on CBS on March 14, 1949).