Action Surveillance Bureau

A Trusted Partner for Comprehensive Investigative Services in California

Tristar Investigation is California's premier detective agency, proudly serving clients for over 35 years. With a team of experienced and certified investigators, we provide comprehensive and tailored investigative services to individuals, businesses, and law firms across diverse fields.

Our Expertise

Our expertise covers a wide spectrum of investigative needs, including:

Plaintiff Services

• Employment law services, including difficult process service and employee list research
• Witness outreach and depositions
• Missing plaintiff and business identification research
• Asset investigations and recovery

Individual Services

• Surveillance and monitoring
• Background checks and criminal history verification
• Fraud and scam investigations
• Missing persons and Locate services
• Injury and accident investigations
• Spanish-speaking PI services

Business Services

• Workers' compensation fraud investigations
• Employee theft and intellectual property investigations
• Business surveillance and corporate intelligence
• Loss prevention and risk mitigation

Our Commitment

At Tristar Investigation, we take pride in delivering:

• Unparalleled Expertise: Backed by decades of experience and extensive training, our team of investigators possesses deep knowledge in various investigative methods and techniques.
• Exceptional Results: We are dedicated to obtaining reliable and actionable evidence to support your case or legal matter.
• Customization: We tailor our services to meet your unique needs and circumstances, ensuring efficient and effective outcomes.
• Transparency and Communication: We maintain open communication throughout the investigation process and provide regular updates to keep you informed.