The Invisible Enemy

Name: The Invisible Enemy
Author: Arnold Castle

For learners

Can I read The Invisible Enemy in English as a learner?

Yes — read The Invisible Enemy by Arnold Castle in English: the complete original text, with tap-to-translate on every word, audio narration, and saved vocabulary. Its CEFR level is B2. Start with a free sample.

CEFR level: B2
Length: 1 chapters
Format: The complete book

About this book

Sent to fight in a war he barely understands, a fifteen-year-old boy faces an invisible enemy while grappling with fading memories and uncertain purpose. In a bleak future where peace is a fragile ideal, survival depends on courage and clarity amid chaos.

What's inside

Every book comes with the tools

Tap to translate

Touch any word or phrase to see it in your language, instantly, without leaving the page.

Save & practise

Keep the words you want. They become flashcards built from your own reading.

Audio narration

Listen to clear, natural narration and read along to train your ear.

Progress tracking

Pick up exactly where you left off, on any device, and watch your streak grow.

Questions

About reading The Invisible Enemy

How do I read The Invisible Enemy?

You can read the sample chapter free, with no account. To read the full book — with tap-to-translate, audio narration and saved progress — start your trial at quiz.nikmas.studio.

Is the text simplified or original?

It's the complete original text, exactly as Arnold Castle wrote it — nothing rewritten or cut. The built-in translation, saved vocabulary and audio narration are what carry you through the original prose.

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