Tier 1 Investigational Services is a full service private investigation agency based in Woodland, WA and serving all of Cowlitz and Clark Counties and specializing in criminal, civil and domestic investigation services. Our investigators are equipped with the most up to date investigative equipment and trained in the latest investigative techniques to ensure our clients receive the most accurate and comprehensive investigative services available to the public. Tier 1 Investigational Services' include: Infidelity Investigations Surveillance and Activities Checks Hidden Video Technology Divorce/Infidelity/Child Custody Criminal Investigations Surveillance and Activities Checks Process Service/Notary Witness Locates Personal Injury Cases Due Diligence/Background Checks Driving Under the Influence Physical Control Homicide Cases Theft, Forgery, Burglary Weapons Offenses Corporate Investigations Surveillance and Activities Check Intellectual Property Investigations Hidden Video Technology Internal Theft Investigations Corporate Fraud Due Diligence/Background Checks * Additional Services are available upon request. At Tier One, we combine the tenacity and dedication of expert detectives with the accuracy and speed of today's investigative environment. We hope that we can be of assistance to you. Please contact us today so we can offer a solution to provide you with peace of mind.