Our Expertise

Tap into our 25 years of investigative excellence. Connect with Stone Investigations today and leverage our seasoned expertise for your unique needs. Get Started Now!

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Foremost Private Investigator Services in Southern California

Stone Investigation Services is a family-owned private investigator firm located in Fontana. Our team of skilled investigators is dedicated to providing you with the highest quality service available. We understand that seeking the help of a private investigator can be overwhelming, which is why we take the time ...

Patience and Discretion for a Personalized Service

An intricate and thorough investigation is paramount to finding answers to your questions and concerns. We take the time to review all available information and conduct detailed research before presenting our findings. Our reports include all relevant information and, if necessary, recommended next steps.

It is ...


  • 24/7 availability
  • Free consultation
  • Debit & credit cards accepted
  • Personalized investigations
  • 25 years of experience
  • Reliable & efficient service


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