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Find closure in your case

J. Randall Casaus Investigations is a full-service detective agency having over 30 years of investigative and law enforcement experience and a track record of delivering first-class investigative results.  Whether you are an individual, an attorney, or a member of the business community, we provide both a personal and professional touch that insures your needs are being served. We cover every part of Northern California, from investigations in the San Joaquin Valley, San Francisco Bay Area, Greater Sacramento Area and all points in between.

Expert investigative techniques

Document investigation

Support your claim with facts.

Claims investigations

Work claim form

Stop workers' comp fraud.

Workers' comp

Expert assistance

Court qualified expert in narcotics.

Expert trial witness

Narcotic expert discussing

Over 28 years of experience.

Narcotics expert

Utilizing all the latest technology

Child custody case

Uncover the facts in your case.

Child custody

Business loss prevention

Stop thieves in their tracks.

Loss prevention

Criminal cases

Let us gather the facts for your case.

Criminal investigations

Insurance case

Prove a claim is fraudulent.

Insurance fraud

Contact us to schedule an appointment Allow us to answer your questions Learn more here Divorce and child custody Worker's compensation claim Recover stolen items Get assistance with your case Criminal and civil cases Narcotics cases Fraud cases