01. The Castle
The First Episode
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April 2, 1980
02. Unwelcome Visitors
No details
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April 9, 1980
03. Spies
No details
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April 16, 1980
04. Discoveries And Threats
No details
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April 23, 1980
05. Pressure
No details
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April 30, 1980
06. Departures
No details
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May 7, 1980
07. Conclusions
No details
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May 14, 1980