About Us

I started Allen Investigations in 2004, but I have always been in the business of helping people in some capacity, starting with my career as a San Bernardino County; Sheriff’s Deputy, where I worked as a specialized detective in the Crimes Against Children Division and the Homicide Division.

I retired from the Sheriff’s Department and became a Riverside County District Attorney’s Office Senior Investigator, where my investigative skills were honed.  After retiring from the District Attorney’s office, I knew I couldn’t let my 25 years of investigative experience just sit and collect dust.

years of investigative experience.

people with successful reunions

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Our Services


Welcome to Allen Investigations! We’re glad you found us! Allen Investigations was founded and is led by Debra Allen, a retired law enforcement professional with over 30 years of investigative experience. We provide full service private investigations, background checks, missing person investigations


Our investigative team has reunited over 3000 thousand birth families. Allen Investigations has extensive experience and resources to discover family members you would like to connect with. Contact us when you are ‘ready for answers’.

Adoption Services

Approximately 2.5% of all American children are adopted. If you are an adoptee or birth parent looking to reunite with your first or birth family, Allen Investigations has a track record of using proven investigative techniques, genealogy and DNA, to locate family members. Our investigative team has reunited over 3000 thousand birth families.

Call For a Quote:

(833) 742-5536


We serve the public, attorneys, business owners and families needing genealogical research. We will handle your case efficiently, professionally and with the utmost discretion. Allen Investigations has the highest of standards in the industry. We incorporate the latest technology with our vast investigative experience. We are a fully licensed, insured and bonded agency. We’re here when you need answers!

Client Testimonials

Contact Us

Allen Investigations
111 Hekili Street A222
Kailua, HI 96734



We belong to the following organizations:
  • Cold Case Foundation
  • Calipi California Private Investigators
  • AalpI Arizona Association of Licensed Private Investigators
  • W.A.D. World Association of Private Investigators
  • Southern California Fraud Investigators Association
  • Nciss National Council of Investigations & Security Services
  • California Homicide Investigators Association
  • Arizona Homicide Investigators Association
  • Intellnet - International Intelligence Network
  • Nali - National Association of Legal Investigators

Licensed, Bonded, and Insured - California PI license # 29141 | Arizona PI license # 1649611 | Arizona Confidential Intermedary #30402