From acting as a field supervisor and training officer to mentoring investigators on Cal-Wrap and orienting new staff in multiple units, Fuller consistently guides colleagues, fosters team competence, and bridges investigative and prosecutorial functions.
greg Fuller
CALL US TODAY (951) 444-9121
- Major Crimes & Homicide Investigation
- Undercover Narcotics & Vice Operations
- Leadership, Mentorship & Training
Call us Today
(951) 444-9121
Greg Fuller
Investigator
Most recently, Gregory B. Fuller served on the Riverside County Regional Cold Case Task Force (2022-2025) as a Senior Investigator, reopening complex homicides and guiding prosecutors through fresh evidentiary strategies. Before that assignment, he spent 16 years in the District Attorney’s Major Crimes Unit, where he led or supported high-profile homicide, gang, and death-penalty investigations—including the Christopher Dorner and Corona Costco officer-involved shootings—while providing protective details for attorneys and witnesses.
Fuller joined the Riverside County District Attorney’s Office in 2006 after policing careers with the Ontario and Rialto Police Departments. In Ontario he rose to Police Corporal and Narcotics/Vice Investigator, authoring more than 50 search warrants and conducting over 60 undercover buys. Earlier, as a Rialto Police Officer, he ran long-term undercover storefront operations, executed 75+ search warrants, and worked both gang enforcement and crisis-negotiation assignments. These posts honed his skills in surveillance, informant handling, and inter-agency collaboration.
Certified at the POST Advanced level and trained in homicide, officer-involved-shooting, and internal-affairs protocols, Fuller is an active member of multiple investigator associations. Throughout his career he has mentored new investigators, coordinated Cal-Wrap witness-relocation efforts, and routinely briefed prosecutors on investigative strategy—demonstrating a commitment to professional development and public safety that he now brings to private investigation work.
Major Crimes & Homicide Investigation
Undercover Narcotics & Vice Operations
Leadership, Mentorship & Training
Major Crimes & Homicide Investigation
Fuller devoted 16 years to Riverside County’s Major Crimes Unit, managing complex homicide, gang, and death-penalty cases and supporting landmark investigations such as the Christopher Dorner OIS—illustrating deep expertise in evidence development and courtroom preparation.
Undercover Narcotics & Vice Operations
Early assignments with Ontario and Rialto PDs saw him authoring 125+ search warrants, cultivating confidential informants, and completing more than 120 undercover buys, giving him a robust foundation in covert operations and inter-agency narcotics enforcement.
Leadership, Mentorship & Training
OUR TEAM IS COMPOSED OF FORMER FEDERAL, STATE, AND LOCAL LAW ENFORCEMENT DETECTIVES FROM
Executive Team
Meet the Leadership that will guide you through your case
FOUNDER AND CEO
Joe DelGiudice
Joe DelGiudice, with over eight years as Chief Investigator at the Riverside County District Attorney's Office, led a team of 200 law enforcement professionals to prominence in modern policing. His three decades of experience spanned multiple areas, including white-collar crimes, gang investigations, cold cases, fugitive apprehension, and more.
DIRECTOR OF SECURITY
Doug Stice
Doug brings 27 years of investigative expertise from the Los Angeles Police Department, retiring from the Major Crimes Division with a broad experience in handling high-profile cases such as homicides, cyber crimes, and more. His career highlights include specialized skills in infrastructure security and event threat analysis for major events like the Oscars and Grammy Awards. Doug now leads Virtual Cyber Cop, focusing on cyber crime solutions.
DIRECTOR OF PERSONNEL INVESTIGATIONS
Dennis Vrooman
Dennis Vrooman, former Undersheriff of Riverside County, oversaw 4,000 personnel in the state’s second largest Sheriff’s Office, where he played a pivotal role in managing complex law enforcement operations. His leadership followed a distinguished career with both the Downey and Murrieta Police Departments, where he gained extensive experience in community policing, operational oversight, and public safety initiatives.
