Darsteller und CrewPete SmithNarrator (voice)Margaret BertNurse (uncredited)Emmett VoganPierre Curie (uncredited)Jacques TourneurRegisseur:inN. Gayle GittermanSchreiber:inAndré CheronHenri Antoine Becquerel (uncredited)Richard GoldstoneSchreiber:inEddie HartPhotographer (uncredited)James ConatyAmerican Scientist (uncredited)
