AZDPS License #1662143 / #1662144
Peak Investigations.30+ Years Police Experience.
Serving North Phoenix, Prescott and surrounding areas, plus anywhere online. Full Service Investigations, including Asset Locates, Divorce / Domestic, Social Media Investigations.
30+
Years Experience
Meet Glen Dunsbergen
Arizona Licensed Private Investigator
Glen Dunsbergen (AZDPS Licenses 1662143 / 1662144) is a licensed, bonded, and insured Arizona private investigator based in Phoenix. With more than 30 years of investigative and courtroom experience, he provides direct, one-on-one service to clients facing complex and high-stakes matters. When you retain Glen, you work directly with him — no intermediaries and no outsourced casework.
Some Professional & Confidential
Services We Offer
From personal matters to complex legal cases — we uncover the truth with experience you can trust.
Adoption Screening Investigations
Through the analysis of online forums, social media activity, legal records, and digital footprints, we assist adoption agencies and families in assessing the lifestyle, stability, and overall credibility of all individuals involved.
Background Checks Enhanced by OSINT
Our background checks extend well beyond basic civil and criminal history searches by utilizing advanced Open Source Intelligence tools.
Divorce & Cheating Spouse Investigations
We deliver court-ready evidence using traditional methods and digital, open sources, saving our clients time, money, and stress.
Cold Case Homicide Investigations
Experienced cold case investigation bringing fresh eyes and modern techniques to unsolved cases.
Social Media Investigations
Deep-dive analysis of social media activity to uncover digital evidence and behavioral patterns.
Child Custody Investigations
Discreet investigations to protect your children and support your custody case with verified evidence.
Asset Searches
Comprehensive asset location and financial investigation services for legal and personal matters.
Corporate Investigations
Professional corporate investigations including fraud, employee misconduct, and due diligence.
Your case deserves expert insight to uncover the truth
Every decision is backed by verified intelligence.
30+ Years of Proven Experience
Decades of hands-on investigative work across law enforcement and legal investigations
Licensed, Bonded & Insured
Arizona AZDPS certified and professionally backed by State and Federal Level Agencies
One-on-One Confidential Service
Every case is handled personally by Peak Investigations — private, discreet, and focused
Why We Use Open Source Intelligence (OSINT)
- Deep, Accurate Results
- Fast, High-Volume Intel
- Up-to-Date Information
Trusted by Clients Across
Arizona
We support individuals, families, and attorneys across the state with integrity and discretion.
"I hired Peak Investigations to look into a delicate family matter. His professionalism, discretion, and thoroughness gave me peace of mind during a very difficult time."
Janet M.
Phoenix, AZ
"Glen's investigative experience shows in every step of the process. He found details no one else could. If you want real answers, this is who to call."
Jason T.
Scottsdale, AZ
"I was afraid my concerns wouldn't be heard. He handled my case with care and helped uncover the truth I needed."
Angela R.
Scottsdale, AZ — Family Law Client
Let's Talk — No Pressure, No Obligation
Your story matters. Speak directly with Glen and get the answers you deserve.
- Expert in Cold Case & Missing Persons
- Trusted by Attorneys & Private Clients
- Discreet, One-on-One Service
- Results Backed by Real Experience
Get in Touch Confidentially
Your privacy is our priority — share your concerns, and let's find the truth together.