"Lux Radio Theater" broadcast a 60 minute radio adaptation of the movie onMarch 30, 1953 with Sammy Ogg reprising his film role.
Angela Clarke was the voice of the Virgin Mary, pitching her voice a bit lower and speaking very slowly. She had done one of the crowd voices in the scene "Let us see the children!", as did Jay Novello.
Rather than letting Susan Whitney speak her own lines in the final scene, when she appears with stage makeup to age her appearance so as to appear as Lucia did at age 47, the filmmakers dubbed in the very recognizable voice of Angela Clarke who also dubs the Virgin Mary.
Soror Lucia, the last surviving Fatima real-life visionary, had seen this movie, and said that she didn't like it.
The principal character in the movie aside from the children, Hugo da Silva, their agnostic, fortune-hunting but lovable friend played by 'Gilbert Roland', was actually a fictitious person, introduced to soften the impact of a sectarian movie on the wider public. He does not appear in "La Senora de Fatima", the 1951 black-and-white Spanish film version of the story made just prior to this one.