Experts in Litigation Support and Complex Investigations

Keystone Investigative Services, Inc. is a premier investigative firm renowned for providing specialized services to Law Firms, Insurance Carriers, Corporations and the Entertainment Industry.  Keystone is at the forefront of experts in the field of legal investigations and insurance defense.

Our corporate headquarters is located in beautiful Pasadena, California and we provide investigative services Nationwide.  We are a state-of-the-art investigation agency which leverages modern technology to obtain vital information for each unique case. Keystone’s legal investigators are experts in research and analysis.  Our experienced field team is through, savvy and resourceful.

Keystone Investigative Services is dedicated to providing excellence in customer service and high quality information products.  We are pleased to offer a hands-on approach to custom tailor investigations based on your directives, required depth and scope of the research for the specific nuances of each case.

“More of What You’re Looking For.”


Attorneys

Our legal investigators assist attorneys in the preparation of case matters by gathering…Read More

Insurance/TPAs

Keystone investigators are experts in insurance defense investigations…Read More

Corporations & Businesses

Our business and workplace investigations division works diligently to provide specialized…Read More