Karl Schneider, writer for the Berlin Allgemeine, is suspected of being
a German/Soviet double agent. While D-Agency searches for proof of his 
espionage activities, Schneider suddenly dies under mysterious circumstances.
Lieutenant Colonel Yuuki sends his men on individual missions in order 
to uncover the truth.
The double cross in the English alphabet
الحرفان اللّذان يرمزان للخيانة في الإنجليزيّة
Und das doppelte X
in lateinischer Schrift
Las dos equis en la nota
Las dos equis en la nota
Le double X laissé en bas
Quel messaggio, le due croci,
O duplo "X" deve ter sido 
 uma mensagem dela