A crime has been committed. A theft occurred just 30 minutes ago, and three neighbors—Alex, Bob, and Carol—each claim they were home at the time. But one of them is lying. The challenge? To figure out who. At first glance, their stories seem plausible, but a small environmental clue exposes the deception. Let’s break it down step by step.

The Scene of the Crime – A Normal Neighborhood or a Web of Lies?

When investigating a mystery, the first thing to do is examine the surroundings. In this case, everything seems ordinary. Each suspect’s car is parked in front of their house, and there are no immediate signs of foul play.

However, something stands out—a small yet critical detail that will ultimately crack the case wide open.

The Key Clue – What the Rain Revealed

The most revealing piece of evidence? The road is wet from a recent rain shower, except for one spot—the ground beneath Alex’s car is completely dry.

At first, this may not seem like a big deal. But when you think about it, it’s a glaring inconsistency. If Alex’s car had been parked there the entire time, the ground under it should be wet like the rest of the street. Instead, it’s bone dry.

What does this mean? It’s simple: Alex’s car was not parked there when it rained. He must have left at some point and returned only after the rain stopped.

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Analyzing the Lies – Who Was Really Home?

Now, let’s connect the dots.

• Bob and Carol’s cars were in place when it rained, meaning they were likely home, just as they claimed. The wet ground under their vehicles supports their alibi.
• Alex’s car, however, tells a different story. Since the ground beneath it is dry, the car was moved after the rain. This contradicts his claim of being home during the entire period.

Alex says he was home, but the evidence tells us otherwise. He must have left his house before or during the rain and returned after it had stopped. And if he wasn’t home, what was he doing?

The Logical Conclusion – Alex Is the Liar

Now that we have all the pieces of the puzzle, the truth is clear: Alex lied about being home.

His dry parking spot exposes his deception. If he had truly been inside his house when the theft occurred, his car would have been parked in place during the rain, and the ground beneath it would be wet. But that wasn’t the case.

The only explanation? Alex left at some point and came back after the rain ended. And if he wasn’t home, he couldn’t have had an alibi for when the theft took place.

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Final Verdict – Case Closed

The smallest details often hold the biggest clues, and in this case, a simple dry patch of pavement solved the mystery.

• Bob and Carol told the truth—their cars and the wet road support their alibi.
• Alex was lying—his dry parking spot proved he had not been home the entire time.

So, who is the liar? Alex. And in mysteries like this, the environment often speaks louder than words.