A compelling radio drama series called “I Was a Communist for the FBI” is based on the actual experiences of undercover FBI agent Matt Cvetic, who infiltrated the American Communist Party. In “I Walk Alone,” a Cold War-era episode, the high-stakes world of espionage is explored. Cvetic must balance his conflicting loyalties while navigating the perilous waters of keeping his cover while also managing the ongoing danger of being discovered. The show provides a gripping examination of Cvetic’s secret existence that is rife with tension, peril, and intrigue.