Synopsis
History
First publication: If, September 1953
1954 RetroHugo winner for best novella.
Review
Videos
We have the story in these editions:
If: Worlds of Science Fiction, September 1953, edited by James L. Quinn, magazine, Quinn Publishing, 1953-09-00
All of the stories in the After Such Knowledge series:
A Case of Conscience
1 Doctor Mirabilis
2 Black Easter
3 The Day After Judgement
4 A Case of Conscience