Enemy is a strong option for learners who already feel comfortable with English and want a more demanding challenge. At around 32 words per minute, the rhythm of the dialogue is manageable and easy to follow. The vocabulary is not overly technical, though it includes enough variety to make the practice meaningful. The narrative adds extra difficulty because learners need to track events, motives, or character relationships. If your English is close to B2/C1, Enemy can be useful for building confidence with more complex narratives.