About Us
Dedicated professionals committed to finding the truth with integrity.
About Mannix Investigative Solutions, LLC
A Trusted Private Investigation Company Led by a 26-Year Law Enforcement Professional
Mannix Investigative Solutions, LLC Managed by Matthew Fox, a 26-year law enforcement veteran. He is a California-based private investigation company managed by a 26-year law enforcement veteran with extensive experience across Patrol, Investigations, and Command-Level leadership. With decades of hands-on involvement in complex criminal and administrative investigations, Mannix brings unmatched expertise and credibility to clients seeking reliable, professional investigative services.
Mathew Fox has overseen investigative units responsible for financial fraud, complex criminal schemes, internal affairs matter, background investigations, and homicide cases, delivering accurate, defensible findings that hold up under legal scrutiny. This foundation makes Mannix Investigative Solutions, LLC one of the most experienced and trusted investigative resources for attorneys, businesses, government agencies, and private clients.
Comprehensive Expertise in Investigations and Legal Support
Mannix Investigative Solutions, LLC offers targeted investigative support backed by real-world operational knowledge. Key areas of specialty include:
- Criminal Investigation Assistance
- Administrative Investigation Assistance (SB 2 / Lexipol Policy / Application)
- Civil Investigation Assistance
- Employee / Workplace Misconduct Investigations
- Background Employment Investigations (Civilian / Law Enforcement – POST)
- Internal Investigations (Civilian / Law Enforcement)
- Legal Defense Support
- Hiring & Testing / Assessment Center Assistance (Law Enforcement)
Professional Referral Network for Comprehensive Client Support
To ensure clients receive full-service solutions beyond investigative work, Mannix Investigative Solutions, LLC maintains a vetted network of professional partners, including:
Licensed PPO Security Providers
Criminal Defense Attorneys
Administrative & Law Enforcement Defense Attorneys
Why Clients Choose Mannix Investigative Solutions.LLC
Clients turn to Mannix LLC because of:
- Proven law enforcement and investigative experience
- Objective and defensible reporting
- Strict confidentiality and ethical standards
- Deep understanding of legal defense and administrative processes
- Strong ability to support attorneys, agencies, and private-sector clients
When cases require clarity, accuracy, and seasoned insight, Mannix Investigative Solutions, LLC delivers results grounded in decades of investigative leadership.
Referral Disclaimer
Mannix Investigative Solutions, LLC may provide referrals to attorneys or PPO service providers upon request. These referrals are offered solely as a courtesy. We do not receive any compensation or benefit for referrals, and we do not guarantee or endorse the performance or outcomes of any referred professionals. Clients are free to select any provider they choose.
Why Clients Choose Mannix Investigative Solutions, LLC
Clients turn to Mannix because of
Licensed & Bonded
Fully licensed private investigators operating throughout California with comprehensive insurance coverage.
Court-Admissible Evidence
All documentation and reports are prepared to meet legal standards for court proceedings.
Confidential Service
Complete discretion in all matters. Your privacy and confidentiality are our top priorities.
- Proven law enforcement and investigative experience
- Objective and defensible reporting
- Strict confidentiality and ethical standards
- Deep understanding of legal defense and administrative processes
- Strong ability to support attorneys, agencies, and private-sector clients
When cases require clarity, accuracy, and seasoned insight, Mannix Investigative Solutions, LLC delivers results grounded in decades of investigative leadership.
Credentials & Certifications
Professional qualifications that demonstrate our commitment to excellence.
Our History
A timeline of growth and achievement in professional investigations.
Founded Mannix Investigative Solutions
Expanded to full-service investigation firm
Added digital forensics capabilities
Achieved CFE certification
Expanded statewide operations
Ready to Get Answers?
Contact us today for a confidential consultation. We're here to help you find the truth with discretion and professionalism.