🔍 Investigation

Learning through investigation: question the suspects

Step into an immersive criminal investigation. Each suspect defends their own version of events — it's up to you to spot the contradictions, cross-check the clues and deliver your verdict.

🔍 Every suspect is hiding something. It's up to you to find out what.

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The characters to question

Each has their own version. Not all of them tell the whole truth.

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Édouard Leroux

Main suspect

He was there on the night of the crime — but he denies it. Look for the holes in his alibi.

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Hélène Mercier

Key witness

She saw something. But is she really impartial? Her hesitations are suspicious.

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The inspector

Investigator

Get briefed by the inspector before questioning the suspects. He knows the facts.

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The forensic expert

Technical expert

Consult the expert to understand the physical evidence: time of death, murder weapon, traces.

What the investigation develops

Much more than a game — an exercise in critical thinking.

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Cross-checking clues

Every suspect leaves traces — in what they say and in the facts. Compare their accounts to find the contradictions.

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Spotting lies

Suspects lie, leave things out, contradict themselves. It's up to you to notice when their story falls apart.

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Reasoning before concluding

The goal isn't just to find the culprit — it's to prove it. Logic matters as much as intuition.

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Asking the right questions

A suspect will never volunteer what they're hiding. The way you question them makes all the difference.

Available scenarios

Each investigation is an original story with its own suspects, clues and twists.

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Locked-room murder

The victim was found dead in a room locked from the inside. How is that possible?

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Disappearance in 1920 Paris

A wealthy collector vanishes without a trace. Those close to him contradict each other.

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Impossible alibi

The suspect was supposedly on the other side of town. But the witnesses say otherwise.

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The poisoned inheritance

The will was changed the night before the death. Who had access to the notary's office?

For teachers: create your own investigation

Set up your own suspects, your own clues, your own culprit. Students question the characters while you follow their reasoning live from your dashboard.

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