![](https://image.tmdb.org/t/p/original/yEnfUB4hmUEOTXgyM3seKljl674.jpg)
![](https://image.tmdb.org/t/p/w342/3UAkvnOqUi8u04bFfOcUa4OiufJ.jpg)
Japanese Imposters
Crossword puzzles in a national newspaper begin to attract the attention of MI5, the answers are code words for the upcoming D-Day operation. Is this the work of a spy?
![](https://image.tmdb.org/t/p/w300/yEnfUB4hmUEOTXgyM3seKljl674.jpg)
Other episodes for this season
![Churchill's Ice Ship](https://image.tmdb.org/t/p/w300/yEnfUB4hmUEOTXgyM3seKljl674.jpg)
![Bird Wars](https://image.tmdb.org/t/p/w300/yEnfUB4hmUEOTXgyM3seKljl674.jpg)
![Japanese Imposters](https://image.tmdb.org/t/p/w300/yEnfUB4hmUEOTXgyM3seKljl674.jpg)
![Vampire Wars](https://image.tmdb.org/t/p/w300/yEnfUB4hmUEOTXgyM3seKljl674.jpg)
![Nazi Lord of the Rings](https://image.tmdb.org/t/p/w300/yEnfUB4hmUEOTXgyM3seKljl674.jpg)
![Nazi Hunt for Atlantis](https://image.tmdb.org/t/p/w300/yEnfUB4hmUEOTXgyM3seKljl674.jpg)
![The Deadly Toyshop](https://image.tmdb.org/t/p/w300/yEnfUB4hmUEOTXgyM3seKljl674.jpg)
![Mad Monk Murder Mystery](https://image.tmdb.org/t/p/w300/yEnfUB4hmUEOTXgyM3seKljl674.jpg)
Crossword puzzles in a national newspaper begin to attract the attention of MI5, the answers are code words for the upcoming D-Day operation. Is this the work of a spy?