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How to Detect Lies: Lessons from a Secret Service Agent

FLAME with Brad Hook

How to Detect Lies: Lessons from a Secret Service Agent

Brad Beeler · Retired U.S. Secret Service special agent & author2 October 202552 min

Brad Beeler conducted more criminal polygraph examinations than anyone in Secret Service history. His surprising conclusion after 25 years: most of us are terrible at spotting lies — and trust is built, not detected.

The longest-tenured polygraph examiner in Secret Service history has watched thousands of people lie, confess and everything in between. What he learned runs against the body-language folklore: deception detection is mostly about presence, rapport and asking better questions — the same skills that build trust in leadership, sales, negotiation and parenting.

Drawing on his book Tell Me Everything, Beeler unpacks what actually makes people open up, why calm presence beats interrogation, and how the mechanics of trust work when the stakes are highest. A rare inside view from rooms most of us never see.

In this episode

  • Why most people are awful at spotting lies
  • What 25 years of polygraphs teach about truth-telling
  • Presence and rapport over interrogation tactics
  • Questions that make people want to tell you everything
  • Trust-building for leadership, sales and family alike
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