With over 30 years in law enforcement, homicide, and legal investigations, Glen Dunsbergen brings unmatched expertise, professionalism, and discretion to every case.
Glen Dunsbergen (AZDPS 1662143 / 1662144) is a licensed, bonded, and insured Arizona private investigator based in Phoenix. With over 30 years of investigative experience, Glen delivers a personalized, one-on-one service to clients seeking answers in complex cases. His career includes roles as a Police Patrol Officer, Police Detective, Homicide Investigator, Deputy Medical Examiner, Domestic Violence Program Director, Victim Advocate, and Criminal Prosecutor.
Decades of hands-on experience in homicide, law enforcement, and legal investigations.
Arizona DPS certified and professionally trained by State and Federal Level Agencies.
Every case is handled personally by Peak Investigators — private, secure, and discreet.
At Peak Investigations, we specialize in uncovering the truth through advanced social media investigations. Using powerful OSINT tools, we analyze public and semi-public data from platforms like Facebook, Instagram, Reddit, and more to reveal hidden connections, patterns, and behaviors. In Phoenix, where millions leave digital footprints daily, we can often resolve cases without the expensive traditional surveillance—saving you time and money.
At Peak Investigations, we incorporate OSINT into our services because many times it delivers faster, smarter, and more cost-effective results for our clients in Phoenix and across Arizona.
OSINT often reveals key information without the high expense of physical surveillance or
long-term stakeouts.
Our tools collect and analyze massive amounts of digital data in real time—so you get answers quickly.
We monitor constantly changing sources like social media, forums, and online records to provide the most current insights available.
At Peak Investigations, we specialize in uncovering the truth through advanced social media investigations. Using powerful OSINT tools, we analyze public and semi-public data from platforms like Facebook, Instagram, Reddit, and more to reveal hidden connections, patterns, and behaviors. In Phoenix, where millions leave digital footprints daily, we can often resolve cases without the expensive traditional surveillance—saving you time and money.
Our tools collect and analyze massive amounts of digital data in real time—so you get answers quickly.
We monitor constantly changing sources like social media, forums, and online records to provide the most current insights available.
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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
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
We’ve helped individuals, families, and attorneys uncover the truth
with integrity and discretion.
Your privacy is our priority — share your concerns, and let’s find the
truth together.
Peak Investigations is dedicated to uncovering the truth with integrity, experience, and absolute discretion. Whether it’s a personal matter or a complex cold case, we are here to help you find the answers you deserve.
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