Welcome to Jane Doe Investigations - Serving Santa Clara County


Santa Clara County/San Jose Investigation Services

Diane Rivera


Private Investigator License # 188532

(650) 530 - 7078



Offering discreet, diligent investigation services, and experienced in a wide range of matters.  Specializing in Criminal Defense Investigations including:

  • Homicide/Attempted Homicide
  • Assault Charges
  • Gang Crimes
  • Domestic Violence
  • Drug Charges
  • Robbery
  • Home Invasion
  • Mitigation 
  • Process Service
  • Criminal & Civil Background Checks
  • Locate/Missing Persons
  • Witness Interviews
  • Crime Scene Documentation
  • Police Investigation Review
  • Trial Preparation & Support
  • Youthful Offender Parole 

Approved by the County of Santa Clara Independent Defense Counsel Office (IDO)

 Licensed by the California Bureau of Security and Investigative Services (BSIS)

Active Member of the California Association of Licensed Investigators (CALI)

Associate Member of the California Defense Investigators Association (CDIA)

About us

Jane Doe Investigations, was created to provide full service licensed private investigations based on ethics, diligence, and integrity.  Formed by Diane Rivera, "the person they never see coming."  She served in an Intelligence Unit with the U.S. Military (Electronic Warfare), has an education in Business, Medicine, Law, (and even trained by FEMA), giving her a unique insight and perspective into various diverse subjects. 

Previously employed in Medicine, Information Security, Emergency Management, Immigration Law, Family Law, and Criminal Law, both Defense and Prosecution, all of which contributed to her becoming a highly skilled Investigator. 

*Ask her about the time she swam a 100 mile marathon. 


Is this confidential?

- Yes.  Confidentiality is extremely serious, and all files, communication, and contacts are kept secure. 

How did you become licensed?

- The State of California requires that in order to become licensed one must pass criminal background checks by both the DOJ and FBI, have 6,000 hours of compensated experience in investigative work; or a law or police science degree and 4,000 hours of compensated experience in investigative work. Then pass a rigorous examination covering laws and regulations, civil and criminal liability, evidence handling, undercover investigations, and surveillance.  


 Diane is hard-working and has a knack for getting people to talk to her.  In one of my cases, a witness had escaped from the authorities and crossed state lines.  Diane found the witness by following the trail, one person at a time.  When she reached the end of the road, she brought back information that changed the outcome of the case.  On another occasion, I was managing a stack of my cases, all of which were supposed to be sent out for trial at once.  I was able to work through each case one at a time, and stay focused in court, because Diane wrangled witnesses and kept everybody on track. 

-----William Safford,  Attorney at Law

On a Personal Note

"I have always believed in the need for growth.  You can be great at something, but not love doing it.  While working in medicine for 10 years, I was happy to help others, but decidedly bored.  Solution?  Go get another degree.  With 9 years of college behind me, I have put in the work to accomplish my goals, but still consider myself truly lucky to have found a career that makes me excited every day.  Even so, I would gladly take on another 9 years of college.   My goal:  To be more than I am."  

Contact Us

Request Investigation Services

"To leave no stone unturned."

Jane Doe Investigations


(650) 530-7078