Underground Agent
"In this espionage caper, a government spy must keep enemy agents from spying upon a defense plant. His work is made easier by his newest invention, a word scrambler which makes it difficult for the enemy agent."
"In this espionage caper, a government spy must keep enemy agents from spying upon a defense plant. His work is made easier by his newest invention, a word scrambler which makes it difficult for the enemy agent."
