Sigma Investigations

A professional background investigation goes far beyond a simple online search. From pre-employment screenings to field interviews and litigation support, Sigma Investigations helps uncover the facts that matter most—so you can make informed decisions with confidence.

At Sigma Investigations , we provide professional traffic accident investigations across Northern California—designed to meet the needs of private individuals, attorneys, and insurance companies alike. Whether you’re involved in a minor fender bender or a complex liability claim, our reports are built for accuracy, reliability, and peace of mind. Why a Private Traffic Accident Report Matters Some police departments today operate under minimum reporting policies , meaning they may decline to...

When trust is questioned, facts matter. From infidelity to insurance fraud and child custody concerns, Sigma Investigations offers discreet, professional surveillance tailored to your needs. Let us help you uncover the truth—and gain peace of mind.