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P.S.I. Investigations llc
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Please contact us for a free, confidential quotation to assist you and your staff in making a more informed choice when retaining investigative firms and services.

Phone: 425-239-2315

(Head Office)   
8825 34 Avenue NE (Suite L-188)
Marysville, Snohomish County,
WA, 98271-8085

608 South First Street (Suite 211)
Mount Vernon, Skagit County,
WA, 98273

P.O. Box 006
Everett, Snohomish County,
WA, 98206-0006    

Neil Harrison CAI, CPI,
Criminal Defense Investigator

Serving the Greater Washington State Area including King, Snohomish, Skagit, Whatcom, Pierce, Island counties........ and more.


Neil provides prompt, reliable, efficient, and tireless service to his clients, and is a tremendous asset to counsel and others in need of litigation-support services.

Lawyer & Managing Partner