A silhouette moves on CCTV but no one is physically present. What explains this anomaly?

Category: Mystery · Difficulty: hard

Hint: Consider environmental effects on recorded images.

Answer

Reflections from passing vehicles caused illusions

Explanation

Light from cars reflected and created phantom silhouettes not caused by actual people.

This is a hard mystery riddle — a tricky one that takes a little thought. The answer is Reflections from passing vehicles caused illusions.

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