Surveillance services are a crucial aspect of private investigations, involving the discreet observation of a person, place, or activity to gather information without detection, often utilized in forensic investigations.
Private investigators conduct detailed private investigations, including forensic investigations, to uncover facts and gather evidence for a wide range of cases, such as missing persons, background checks, fraud, and criminal defense. They also offer surveillance services to enhance their investigative efforts.
Private investigators may use forensic investigations to analyze physical and digital evidence in support of their private investigations. This includes examining documents for authenticity, recovering deleted data from electronic devices, analyzing handwriting, and processing crime scenes for clues, as well as utilizing various surveillance services.

At the NIA, we specialize in sensitive and discreet domestic surveillance services tailored to protect your interests and provide the truth you deserve. Whether you're facing a difficult personal situation or seeking peace of mind, our licensed investigators are trained to conduct forensic investigations with professionalism, compassion, and complete confidentiality.
Divorce & Infidelity Investigations
Cheating Spouses: Gather evidence of extramarital affairs with discretion and precision through our private investigations.
Prenuptial & Postnuptial Infidelity: Confirm suspicions before or after legal agreements are in place.
Alimony Reduction: Provide evidence to support modifications of spousal support when circumstances change.
Child-Focused Investigations
Child Custody & Visitation: Document behaviors that may affect your child's safety and wellbeing.
Child Abuse or Neglect: Uncover and report suspected abuse to ensure a child’s protection.
Child Location: Work swiftly to help locate missing or runaway children using advanced tracking methods.
Background & Identity Checks
Premarital Criminal and Background Searches: Know who you're committing to before walking down the aisle.
Identity Theft Investigations: Trace fraudulent activity and help restore your security and reputation.
Domestic Safety & Protection
Domestic Violence: Assist in documenting abuse and collecting evidence for legal protection.
Violation of Restraining Orders: Monitor and record violations to support legal enforcement.
Housekeeper or Roommate Theft: Investigate internal theft to recover losses and prevent future incidents.
Elderly & Disabled Caregiver Surveillance: Ensure your loved ones are treated with the care and respect they deserve.

At the NIA, we provide comprehensive surveillance services and business protection to help secure your company from both internal and external threats. Our customized investigative services, including forensic investigations, are designed to identify risks before they escalate into liabilities—and to uncover issues that may already be impacting your bottom line.
Detecting Potential Threats
Stay one step ahead. Our corporate surveillance solutions are designed to proactively identify potential risks, such as suspicious behavior, employee misconduct, or external interference. Don’t wait for a crisis—an ounce of prevention is worth a pound of cure.
Deterring Threats and Theft
A visible and managed surveillance presence can discourage dishonest behavior before it occurs. Whether it’s internal theft, fraud, or property damage, our services help cultivate a culture of accountability that keeps your business safeguarded.
Defending Against Threats & Installing Countermeasures
With actionable intelligence gathered through our surveillance services, we assist you in implementing defensive strategies and countermeasures to minimize vulnerability. Once the nature of the threat is understood, we collaborate with you to neutralize it effectively and efficiently.
Corporate Surveillance Investigations
Our Missouri-based investigators specialize in conducting private investigations that uncover and resolve serious business concerns, including:
- Industrial Espionage
- Embezzlement & Financial Fraud
- Internal Theft & Sabotage
- Product Tampering
- Drug Abuse in the Workplace
- Counterfeit Operations
Each investigation is executed with the utmost discretion, and results are presented in clear, professional reports that can be utilized for internal action or legal proceedings if necessary.

At the NIA, we provide specialized forensic investigations services to uncover critical evidence in complex cases. Our Vehicle Crash Scene Forensics service offers a detailed analysis of accident sites, including skid mark interpretation, vehicle positioning, damage assessment, and scene reconstruction to help determine cause and liability. Our Digital Forensics experts recover and analyze data from computers, mobile devices, and cloud platforms—whether it’s deleted files, emails, or internet activity—to support both civil and criminal investigations. Additionally, we offer Electronic Forensics, focusing on the examination of GPS systems, vehicle black boxes, security systems, and other electronic devices that may contain key evidence. Every investigation, including our surveillance services, is conducted with precision, confidentiality, and strict adherence to legal standards, ensuring reliable results you can trust.

At the NIA, we bring integrity, experience, and results to every case. Our Senior Investigator is a former law enforcement officer with an extensive background in criminal investigations, surveillance, and intelligence gathering.
With years of service in both the Special Investigations Unit (SIU) and the Drug Task Force, our senior investigator has handled complex cases involving narcotics, fraud, covert operations, and organized crime. This hands-on experience provides our agency with a deep understanding of investigative strategy, evidence handling, and the legal standards required to build solid, defensible cases.
Today, that same professionalism and attention to detail are applied to private-sector investigations, including background checks, infidelity investigations, insurance fraud, missing persons, and corporate security matters.
When you work with NIA, you’re not just hiring an investigator, you’re gaining the insight of a seasoned professional who knows how to uncover the truth while maintaining the highest standards of discretion and ethics.
For expert forensic investigations, private investigations, and reliable surveillance services, feel free to reach out.
Festus, MO
(573) 454-9072
EASTERN MISSOURI - Greater St. Louis Area Missouri PI License # 2025046646 Fully Insured and Bonded
We use cookies to analyze website traffic and optimize your website experience. By accepting our use of cookies, your data will be aggregated with all other user data.