England, at the start of World War Two. Mysterious wireless broadcasts, apparently from Nazi Germany are heard over the BBC. They warn of acts of terror in England, just before they take place. Baffled, the Defense Committee call in Sherlock Holmes.
2001
1945
2019
2014
2025
1960
1929
1950
1963
2006
1977
2017
2007
2008
2023
1949
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1951