Four Lines in the Road: The Tiles Nobody Admits to Laying

2026-10-02 · True Mysteries Editorial Desk · Unsolved Ciphers · 8 min read

It is a little before 5 in the morning, on a wide avenue in Philadelphia, in the United States. A car stops at a red light. A man puts something flat down on the road, in the middle of the crossing, and drives on.

The object is about the size of a car number plate. It is wrapped in black tar paper. It looks like rubbish.

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