An international criminal and perfectionist firebug confront Harding when a grand-jury inquiry threatens their enterprise.

This Counterspy broadcast aired on September 6, 1949. It is listed as episode 393 in the archive. ABC Radio Network carried the broadcast. The cast includes Don MacLaughlin and Mandel Kramer. Other credited names include Leonard L. Bass as director, Phillips H. Lord as producer, and Edward Adamson as writer.

The surviving recording runs about 29 minutes. The broadcast is also associated with Pepsi Cola.

An espionage and counterintelligence series centered on agent David Harding and his fight against enemy spies, saboteurs, and organized threats to the United States.

Listeners can expect thriller, adventure, and crime, episodic drama in format, and suspenseful, serious, and tense in tone.