The Eleventh Hour was a South African thriller/suspense series with occasional sci-fi plots. Dated
as early as 1941 and as late as ("Project XP112") Feb. 27, 1946. Another episode "Radioactive Blackmail" has no date, but had to air
after the bombing of Hiroshima (August 1945), as atomic terms (and fear of radiation) were not common knowledge until after time.