Est. 1980 40+ Years · Washington Roots

Private investigators working in Washington State since 1980.

Northwest Investigative Services has handled investigations here since 1980. We find people and assets, examine phones and computers, run surveillance and protective details, and interview witnesses. Each practice is led by an investigator who has done that kind of work for years, and you deal with that person directly.

1980 Established Continuous investigative practice
38,000+ Assignments Completed since our founding
45 Years in the field Four decades of accumulated sources
WA Washington roots Licensed and staffed in Washington
50 States covered Records searches conducted nationwide
  • Licensed since 1980
  • Direct line to your investigator
  • Our own search & forensics platforms
  • Published rates
  • No pretexting
Meet the investigators

Our investigators

Each file is supervised by one of the people below, and you can call them directly. This is who they are and what each one handles.

Michael R. Briggs

Founder Emeritus

Accident & incident investigation since 1974

Founded the firm. Mike is a retired Washington State Patrol trooper who holds a charter Washington private investigator license, and he has been investigating accidents and incidents for attorneys and insurance adjusters around the country since 1974.

  • Accident Investigation
  • Incident Investigation
  • Insurance Claims
Full profile
R. Shane Harrington, Chief Executive Officer

R. Shane Harrington, PhD, MBA

Chief Executive Officer

Runs the firm; forensic interviewing, mitigation & investigative psychology

Shane runs the agency and still handles much of its interview and mitigation work himself, in civil, insurance, and criminal matters. He holds a PhD in psychology and an MBA.

Full profile
Joshua Bullock, Chief Operating Officer

Joshua Bullock

Chief Operating Officer

Operations, private intelligence & investigative technology

Joshua handles day-to-day operations, from intake and scheduling to getting reports out on time. He has a background in intelligence work, writes software, and runs the firm's private intelligence cases.

Full profile

Surveillance & Process Service Team

Field Operations

Surveillance, service of process & field documentation

Licensed field investigators who handle surveillance, service of process, and in-person documentation. We leave their names and photos off this site for their safety, and so they can keep working without being recognized.

Full profile
What we do

Our practice areas

Most matters need more than one kind of work. A single case can call for a locate, an asset search, a phone examination, and a week of surveillance. We handle all of it in-house, so your file isn't passed to an outside vendor you've never spoken with.

The advantage

What we bring to a file

A one-person shop, a database subscription and a national panel that farms out work all have their uses. Here is where we differ from them.

1980

Forty-five years, all of them here

The firm started in Washington in 1980 and has worked here ever since. After that long in one region, we know how records were kept before they were digitized and where the older ones ended up. That background is a big part of how we turn up leads on cold files.

Team

A specialist for each discipline

Our CEO holds a doctorate in psychology and leads interviews and mitigation. Our CTO is certified in offensive security and runs device forensics, and our director of surveillance and protection has 20 years in the field. Each practice is run by someone who has done the work for a long time.

Tech

Platforms we built ourselves

Lodestone, our search platform, and Bloodhound, our forensics platform, plus 45 years of our own Northwest records. Every report runs through a system that checks it against our standards before it goes out. See the technology.

Why clients retain us

How we check and document our work

A locate or a week of surveillance footage is only worth something if it can be defended. We confirm findings against a second source and log the work as it happens. The write-up is formatted so you can attach it to a motion or a claim file.

  • Confidence ratings. We cross-reference findings across independent sources and rate each one, so you know how much weight a lead will carry.
  • Sources for each fact. Every material fact shows where it came from, so you can tell a public record from an investigative inference.
  • Written for the record. Reports are set up to be used as exhibits, and the investigator will sign a declaration when a filing needs one.
  • Agreed before we start. You get the search plan, fee and turnaround in writing, and you won't get an open-ended hourly bill.
  • Honest negative results. If there is nothing to find, we say so and list what we searched.
Where we're engaged

Common reasons clients call us

  • Before filing or after judgment

    Find out whether a defendant can pay, then locate the debtor and the assets that can be reached.

  • Evidence on a phone or laptop

    Examine the phone or laptop at the center of a dispute, or test the other side's reading of it.

  • Injury claims that don't add up

    Surveillance and activity checks on claimed injuries, backed by scene work and statements.

  • Someone is being targeted

    Threat assessments and exposure reviews for executives and families, along with protective intelligence work.

  • Witnesses

    Find the witness who moved, and get a statement you can rely on at deposition.

  • Before a deal or a loan

    Find out who actually controls a company and what lawsuits and liens follow the people behind it.

How an engagement runs

You get the fee and delivery date before research starts

  1. STEP 01

    Intake & permissible purpose

    We take down the subject information and the matter, and record the lawful basis for the search in the file.

  2. STEP 02

    Scope, fee & turnaround

    You receive a written search plan with a flat fee and a delivery date before any work begins.

  3. STEP 03

    Research & verification

    We pull the records and check them against each other. Conflicts get resolved, or flagged in the report if they can't be.

  4. STEP 04

    Documented report

    A structured report with sources and exhibits, plus a declaration of the investigator on request.

Compliance

Why we ask questions before taking an assignment

Financial account information is protected by federal law. The Gramm-Leach-Bliley Act makes it a crime to obtain customer information from a financial institution under false pretenses, and also a crime to request that someone else do it for you. A vendor who never asks why you need the search is putting your matter at risk.

We document a permissible purpose on every engagement and turn down work that doesn't have one. We never pretext financial institutions. Our reports are investigative work product and are not consumer reports under the FCRA.

If a search can't be done lawfully, we'll tell you and decline it.

Open an account with us

We don't take search orders through a web form. Tell us who you are and what kind of work you send, and we'll open an account. After that, assignments run directly with an investigator who knows your matters.