An author wrote a book that no one could read. Each page was filled with black ink that shimmered under the moonlight. What was the reason for its mystery?

Category: Story · Difficulty: medium

Hint: Consider how light can affect visibility.

Answer

The ink was invisible in daylight

Explanation

The ink's shimmer only reveals the words at night, making the book unreadable during the day.

This is a medium story riddle — a moderate challenge for most people. The answer is The ink was invisible in daylight.

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