Race for the Moon #18

Mr. Dennison has a secret. Three generations ago as a young man he was chosen by the war council of his home world to lead a group spying on Earth posing as a pharmacist where he gives his spies invisibility powder. Dennison is unique on his planet as the only person who values friendship and loyalty. The period of spying is nearly up when news breaks that a big chain drugstore is opening up. Dennison feels that the townspeople are lying when they say they will boycott the chain. The drugstore closes and Dennison decides to remain with his earth friends staying invisible. The spies flee.