The Real Secret: Listen Carefully
The most useful approach may be much simpler than a “magic question.”
Ask someone to explain what happened.
Then ask them to walk through the timeline.
Listen carefully.
If something doesn’t make sense, ask for clarification rather than immediately accusing them of lying.
A contradiction doesn’t automatically mean deception either. People can misremember dates, confuse details, or misunderstand a question.
The Bottom Line
There is no guaranteed two-question trick that can expose every liar. But asking calm, open-ended questions can help you understand someone’s story and identify details that deserve further clarification.