Published in The Victor #139-#141, 10/19/1963 - 11/01/1963.
A middle-aged woman comes to 'J' Branch when her physicist husband who has been working abroad goes silent for a month. He had answered an ad looking for "scientists in all branches" to do research in the European nation of Krania. The project had "some connection with moon flights". Strong gets himself hired by the firm as a mathematician to infiltrate the facility. He finds out that the rocket being developed, said to be heading to the moon, is really only capable of reaching England.