Smoking Gun

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Smoking Gun

Very strong evidence that proves a crime. Perpetrators of financial crimes have a reputation of destroying paperwork because doing so reduces the possibility that authorities will find a smoking gun.
References in periodicals archive ?
Now its Tony Blair who appears to many to be dodging a very different smoking gun -one that could show whether the Government misled the world.
However, speaking after briefing the UN Security Council, Dr Blix said that while their were no 'smoking guns' he was still 'unsatisfied' with Iraq's declaration of its weapons programmes.
Companies must walk a narrow course between the expensive and risky extremes of email management: neither keeping all message stores (strains storage and management resources; preserves smoking guns) nor deleting email without a strict retention policy (violates regulatory laws; invites litigation).
In other lawsuits, harassing or obscene messages, copyright violations, or libel and slander have all been found to be "smoking guns" in court battles.
The fact that there were no clear "smoking guns" correlating to ME exposure led the authors to conclude that it comes from a variety of sources, including air, water, and foods containing naturally occurring ME.