Danny Seiler - Polygraph Examiner

Private Investigator

201 Prospect Ave, Hagerstown, MD

4.0/1 Review

Contact

Phone

+1(301)-991-4381

Website

Visit Website

Owner

Dan S.

Dan Seiler is a retired Maryland State Trooper and was a supervisor of polygraph testing for over ten years before retiring in 1990. Dan is past president of the Maryland Polygraph Association and has conducted over 5000 polygraph examinations. He is certified to do criminal, civil and treatment types of tests.

Languages

English

Member since May 2026

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Specialties & Services

Polygraph / Lie DetectorSurveillance

Service Areas

Washington County, Maryland

About

Established in 1978. Cops, Inc. was originally a part time business while Dan Seiler was employed with the Maryland State Police. After retiring form MSP in 1991 Cops, Inc. became a thriving detective agency with both Investigation and Polygraph Services. Dan got his start in polygraph during his last 10 years with MSP. He continues today after over 24 years experience as a private polygraph examiner. Cops, Inc. has been in good standing as a Maryland Corporation ever since it was formed.

Service Cities

Washington County, Maryland

Serves Hagerstown, Halfway, Robinwood, Fountainhead-Orchard Hills, St. James, Boonsboro, Maugansville, and Smithsburg and 53 more nearby cities.

Reviews

4.0(1 review)

4.0

1 review

AnonymousMarch 30, 2017

Follow up on first review after an hour long conversation we come to the conclus

Follow up on first review after an hour long conversation we come to the conclusion where the problem question is and he is retesting me at no additional cost. It took a lot of arguing but I'm happy with the results

This review was left on Yelp and was not independently verified by NearbySpy

via Yelp