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Welcome to Stonewall Polygraph & Investigation, LLC

Choosing a well-qualified examiner with proper training and experience using those empirically validated techniques and procedures is critical in obtaining reliable test results.  Remember, the examination is only as good as the well-trained examiner.

Stonewall Polygraph  & Investigation, LLC serves the entire State of Wisconsin to include: Milwaukee, Racine, Kenosha, Waukesha, Madison, Janesville, La Crosse, Stevens Point, Eau Claire, Chippewa Falls, Superior, Sheboygan, Fond Du Lac, Oshkosh, Appleton, Green Bay, Eagle River and Marshfield

We also serve the areas of Florida to include Naples, Fort Myers and Port Charlotte.