How did Agatha Christie decide to craft the suspense around espionage in this novel?
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Destination Unknown

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La discussion entre lecteurs est ouverte maintenant. Il s’agit d’une discussion communautaire.
How did Agatha Christie decide to craft the suspense around espionage in this novel?
Did anyone else feel the characters' loyalties were intentionally ambiguous?
What inspired the setting for the story, particularly the use of international locations during WWII?