All Cases, Investigative Services (ACIS)

Private Investigator - Detective     
Ontario | Riverside | San Bernardino | Los Angeles 
Bring the Truth to Light
with ACIS Detectives
We give clients Free Consultation 24/7
Office Hours:

9:00 a.m.–10:00 p.m.

Office Hours:
10:00 a.m.–7:00 p.m.

Toll Free: (866) 920-2620

Service Area:
Southern California: Ontario, Murrieta, Monterey Park, San Bernardino County, Orange County, Los Angles, Riverside, Ventura
California Association of Licensed 
Investigators, Since 2007
ACIS Services Links:
Missing Person Infidelity  Surveillance Skip Trace-Locates Process Service Asset Recovery Bank Account Locate 
Blog GPS tracking Surveillance
• Missing Person • Infidelity • Surveillance
• Skip Trace-Locates • Process Service
• Asset Recovery • Bank Account Locate
• Blog • GPS Tracking

Welcome to ACIS Private Investigator of Southern California

If you have found yourself at this web site, you are curious or looking for the assistance of a private investigator or process server for an investigative solution. The purpose of this web site is to help people that are using the internet to find a private investigator or process server in the Inland Empire, southern California area.  If that is what you are doing simply choose the geographical area in California.  If that is which you want to locate an investigator and you are done.  What you will find is a director of investigators or affiliated with the same quality found in ACIS private investigators.  ACIS private investigators and detectives are here to assist you in Ontario, Chino, Fontana, Upland, Murrieta, Riverside, Hemet,  Lake Elsinore,  San Bernardino, Big Bear, Lake Arrowhead, Upland, Los Angeles, Diamond Bar, Glendora,  San Dimas,  Long Beach, Palmdale, Menifee, Hemet, Orange County, Newport Beach, Buena Park  Irvine, Santa Ana,Ventura, San Diego, Fallbrook, Wildomar,  Escondido, Oceanside, Kern, and Fresno counties.

At ACIS Riverside county, our private investigators are experienced prior law enforcement and military personnel with success in conducting investigation.  Our PI's are professionals dedicated to searching out the truth. We received the best private investigators and detectives award issued by the City of Oxnard in 2008.

Our investigators specialize in specific areas such as Family, Legal, Corporate (i.e., divorce, child custody, infidelity, alimony, child custody, background check on nanny, family members, criminal investigation, fraud, employee theft, surveillance, termination of hostile employee, sexual harassment, and stalking.)

ACIS private investigator can help you find information, people, and assets.  Our private investigators can find documentation such as court records, government agencies' filings, vital statistics, property ownerships, vehicle and vessel records, photographs, witness statements, etc.   ACIS private detectives/ private investigators duties depend on the needs of the client. ACIS private investigators specialize in cases involving the courts and work closely with law firms and private attorneys.  Our private investigators frequently assist in preparing criminal defenses, locating witnesses, serving legal documents, interviewing police and prospective witnesses, and gathering/reviewing evidence. ACIS private investigators may also collect information on the parties to the litigation, take photographs, testify in court, and assemble evidence and reports for trials.   
General Advice Domestic Matters and Finding Investigators
When choosing a private investigation company, ensure that they are properly licensed with the California Bureau of Security and Investigative Services (BSIS) and in good standing with Department of Consumer Affairs. Licensed private investigators background checks are conducted with the FBI and the state department of justice before issuance of license. Private Investigators are tested and licensed to demonstrate knowledge and the craft of the trade. Provide the private investigator with as much relevant information as you can. Beyond identifying personal information, information about a person's habits, hobbies and routine may be critical to the success of an investigation, particularly surveillance investigations. Make sure you understand the fee structure, hourly costs rates for mileage, and other expenses prior to the commencement of the file with a private investigator. In addition, you should understand that any investigator that guarantees success to you is not telling the truth. These types of investigations are often difficult and there are many variables to deal with. Results cannot be guaranteed and it is the client that assumes the financial risk. Finally make sure that there is an agreement in place between you and the investigation company that specifies what the company is contracting with you to do. For private investigation services in Southern California, contact ACIS office for an investigator near your location. For more information click on the highlighted word service.
Service Areas
San Bernardino Riverside Orange County Los Angeles Los Angeles Ventura  San Diego
Fontana Murrieta Santa Ana Diamond Bar Long Beach Camarillio Oceanside
Redlands Temecula Fullerton Glendora Laverne Oxnard Rancho Bernardo
Ontario Wildomar Garden Grove Pomona Hawthorne Sherman Oaks Escondido
Colton Hemet Newport Beach Pasadena Palmdale Carlsbad Vista
Chino Perris Costa Mesa Van Nuys Montebello Imperial Beach Fallbrook
Big Bear Moreno Valley Tustin West Covina San Dimas  Del Mar Pine Valley
Upland Menifee
Irvine Rosemead Azusa Del Mar Spring Valley
Rancho Cucamonga Lake Elsinore
Buena Park Monterey Park Culver City Del Mar Pine Valley
Associated Partners

Civil Investigations:
When there is an accident and someone gets hurt, there is always a story to tell. Our private investigator finds out just the facts of what led to the accident. If needed, we bring on board specialists to assist with the case. We interview the witnesses and examine all the evidence that supports our client.

Criminal Investigations:
Law Firms benefit from our investigations of those that you represent. We look for new leads and evidence that exonerates your clients. Our testimony has influenced many court cases and errors in police investigations have been caught, thanks to us. Your clients' alibis can be corroborated by our private investigator.

Bail Bonds Service:
We are affiliated with Axel Bail Bonds and Alvin Brown Bail Bonds, which allows us to use our bail surety authority to get clients released from jail immediately to start criminal defense.  Law firms and their clients benefit from our combined investigations and bail bonds services by getting discount bail service for those that they represent.  We look for new leads and evidence that exonerates clients.  Our testimony has influenced many court cases, and we have been successful in finding errors in the police investigation.  Your client's alibi can be corroborated by our private investigator. For more information and free consultation for bail bonds services, please contact Axel Bail Bonds 24/7 at (909) 890-0888 or (866) 309-5509 toll free.  Visit Axel Bail Bonds at

ACIS private investigators are former Federal Agents and Detecives with years of experience. We stop stalking fast. When necessary, we consult with Forensic Psychiatrist in this field to assist with the investigation. We liaison with the police and District Atttorney's office to assist with prosecution.

Security Services:
Our security department is a full service services agency. We believe that security protection involves both investigative solutions and security protection. Being capable of providing both to our customers enables us to provide the finest protection for you, your family and business. With this is mind our protection services include armed and un-armed guard protection, personal bodyguard and escort services for V.I.P.’s., corporate executives, celebrities and ATM Technicians. 

Family Law:
We are one of only a few of private investigator companies that are willing to accept family law assignments. We take a different approach and view each family law matter as any other private investigation assignment. We determine the nature of the problem and develop an investigative solution suitable to your needs and situation.

Child Custody:
The facts compiled during the investigation are used to assist attorneys in their recommendation and support for custody and child support. Surveillance, extensive investigation, criminal records and background information are also usefuin in preventing and detecting child abuse and neglect, child endangerment, cohabitation with the child present, parent drug/alcohol abuse, increase child support, and other activities concerning the safety of the child.

Fidelity (Catch Cheating Spouse):
All of us expect partners to be faithful to us and not to enter into another romantic or sexual relationship outside our own relationship.  Unfortunately, circumstances, relationship difficulties, opportunity can all lead to unfaithful activities.  Primarily through surveillance, ACIS private investigators are able to document those activities and allow you to make an informed choice as to the future of your relationship. We assit clients in cheating spouseinvestigations. Surveillance Request

Corporate Investigative Solutions:
All business problems are solvable with the right information and right private investigator. Given the appropriate information, the right decisions become available. Every manager knows this. The hard part is obtaining that information in a useable form, in an efficient and fiscally responsible manner.

Electronic Security:
Private investigators at ACIS can assist you in investigations where covert operations are required. We specialize in covert electronic security measures, including covert CCTV camera systems, covert GPS Tracking systems and electronic counter measures for our corporate clients. Spy products and Equipment

 We Accept All Major Credit Cards|Payment Plans Available
Major Credit Cards 
Call a private investigator from ACIS for free consultation in San Bernardino, Riverside, Temecula, Orange County, San Diego, and Ventura to perform background checks and bring the truth to light. free hit counter