Private Detective in Delhi NCR – 100% Confidential Investigation Services
Trusted by families & lawyers for pre-matrimonial, divorce, surveillance & background investigations. 20+ Years Experience. Court-admissible evidence (where applicable).
Court-Ready Investigation Reports
Legally compliant documentation prepared as per Indian Evidence Act guidelines.
Specialized Matrimonial Experts
Dedicated team handling pre-marital, infidelity & divorce investigations in Delhi NCR.
Discreet Surveillance Operations
Professional undercover monitoring with photo & video documentation (where legally permissible).
Trusted Detective Agency in Delhi NCR for Matrimonial & Divorce Cases
Alliance Detective Agency is a Delhi-based private detective agency with 20+ years of experience in pre & post matrimonial investigation, extra-marital affair proof, divorce case support, background checks, and surveillance. We work discreetly, follow legal methods, and provide detailed reports with photo/video evidence wherever possible.
- 20+ years investigation experience in Delhi NCR
- 100% confidential and discreet operations
- Court-admissible reports & evidence (where applicable)
- Specialised team for matrimonial & family disputes
- PAN-India network of trained investigators
Our operations extend across Rohini, Saket, Greater Kailash, Defence Colony, Pitampura, Noida, Ghaziabad and Gurugram, ensuring rapid response and local expertise in every case.
About Us
Private Detective Agency in Delhi
Alliance Detective Agency is a Delhi-based private investigation firm with over two decades of field experience in matrimonial disputes, corporate investigations and surveillance operations. Our investigative methodology combines field intelligence, legal compliance and digital verification tools to ensure accuracy and confidentiality.
Our specialization is in pre matrimonial background checks, extra marital affair investigation cases, but we also handle missing persons, child custody, and insurance fraud investigations. Our team uses the latest technology and techniques to gather evidence and is committed to discretion and confidentiality. If you need answers, contact us. We’ll get to the bottom of it.
As an agency, we are widely considered to be the best detective agency in Delhi. There is a wide range of investigative services, including background checks, infidelity investigations, and surveillance.
25+ Years Experience
100% Legal & Trust Worthy
Confidentiality Guaranteed
A Message from Our Founder, Gaurav Aggarwal
At Alliance Detective Agency, we believe that the truth is the only foundation for peace of mind. For over 18 years, I, Gaurav Aggarwal, have dedicated my career to unmasking reality with absolute honesty and legal integrity. Whether you are seeking a pre-matrimonial investigation in Delhi or a complex corporate background check in Faridabad, our approach is defined by precision and total discretion.
As the lead investigator, I personally oversee our operations in South Delhi, East Delhi, Rohini and across the NCR to ensure that every piece of evidence we gather follows the strict guidelines of the Indian Evidence Act.
We understand that behind every case is a person seeking clarity during a difficult time. That’s why we don’t just provide raw data; we provide certainty. My personal commitment to you is that your trust will be met with professional excellence and results you can rely on.
– Gaurav Aggarwal
Founder – Allaince Detective Agency
OUR SERVICES
Our Areas of Expertise
Pre/Post Matrimonial Investigation
We conduct detailed pre and post matrimonial investigations in Delhi NCR to verify background, financial status, social behavior, and past relationships before or after marriage. Our investigators gather discreet, evidence-backed reports including field verification and digital checks where legally permissible. Every case is handled with strict confidentiality to protect your privacy and future
Divorce Cases Investigation
Our divorce investigation services in Delhi NCR help collect legally compliant evidence in cases involving infidelity, hidden assets, child custody disputes, or misconduct. We provide documented proof, photographs, and surveillance reports (where applicable under law) to support your legal proceedings. All investigations are conducted with 100% discretion and sensitivity.
Extra marital Affair Investigation
If you suspect a spouse of infidelity, our extramarital affair investigation team in Delhi NCR conducts discreet surveillance and behavior analysis to uncover the truth. We gather evidence-based findings including photographs, activity reports, and verification details while maintaining complete confidentiality. Our goal is to provide clarity backed by facts, not assumptions.
Litigation Support
Alliance Detective Agency offers professional litigation support services in Delhi NCR to assist lawyers and individuals with fact verification and evidence collection. We conduct background investigations, surveillance, and document validation aligned with legal guidelines to ensure admissible reporting (where applicable). Every case is handled discreetly to safeguard client interests.
Surveillance
We provide confidential surveillance investigation services across Delhi NCR for matrimonial, corporate, and personal matters. Our trained field investigators use strategic monitoring methods to document activities through photographs and detailed observation reports. All surveillance operations are carried out ethically and in compliance with applicable laws.
Missing Person Investigation
Our missing person investigation services in Delhi NCR involve structured tracking, background research, and field inquiries to locate individuals efficiently. We use verified information channels and investigative techniques to gather reliable evidence and leads. Every case is handled with urgency, care, and strict confidentiality.
Cyber Crime Investigation
We provide cyber crime investigation services in Delhi NCR to help clients identify online fraud, digital harassment, social media misuse, and financial scams. Our process includes digital footprint analysis, technical verification, and legally compliant documentation. We ensure complete discretion while uncovering actionable evidence.
Corporate Investigation Services
We conduct corporate investigations in Delhi NCR including employee background checks, due diligence, internal fraud detection, and asset verification. Our team gathers documented evidence and detailed intelligence reports to protect business interests. Every assignment is managed with professional confidentiality and compliance.
Other Services We Offer
Corporate Investigations
We provide confidential corporate investigation services in Delhi NCR to protect businesses from fraud, employee misconduct, financial irregularities, and compliance risks. Our investigations are evidence-driven and conducted with strict professional discretion.
- Background Checking
- Business Disputes
- Employee Cheating
- Corporate Due Diligence
- Financial Background / Assets Search
- Blackmailing- Corporate & Personal
- Counterfeit/ Copyright Investigation
- Property Issues
- Insurance Claims
- Skiptracing / Missing People
- Mystery Shopping
- Workers Compensation Claims
Personal Investigations
Our personal investigation services in Delhi NCR help individuals uncover the truth in sensitive matters such as matrimonial disputes, missing persons, and loyalty concerns. Every case is handled discreetly with verified, evidence-backed reporting.
- Pre Matrimonial Checks
- Divorce Investigations
- Infidelity / Extra Marital Affairs
- Pre & Post Matrmonial Investigation
- Loyalty Check Investigation
- Blackmailing-Personal
- Missing Person Tracing
- Financial Background / Assets Search
- Property Issues
- Theft & Pilferage
- Loyalty Checks
Legal Support Services
We assist lawyers and individuals in Delhi NCR by collecting legally compliant evidence, conducting fact verification, and preparing investigation reports that support court proceedings (where applicable). All documentation is prepared with confidentiality and procedural accuracy.
- Litigation Support Investigation
- Court-Admissible Evidence Collection (where applicable)
- Witness Background Verification
- Surveillance for Legal Cases
- Child Custody Investigation Support
- Insurance Claim Investigation
- Asset Verification for Legal Disputes
- Alimony / Maintenance Case Investigation
- Criminal Background Verification
- Evidence Documentation & Case File Preparation
Asset Verification & Financial Investigation
We help uncover undisclosed financial assets, hidden liabilities and property holdings through legally compliant verification processes.
Why Clients Across Delhi Choose Alliance Detective Agency
What makes Alliance the best detective agency in Delhi, NCR?
Alliance Detective Agency is a Private detective agency in Delhi. For over 20 years, Alliance Detective Agency has been providing top-quality investigative services to clients in need and is a Best detective agency in Delhi, NCR. We pride ourselves on our attention to detail, our commitment to excellence, and our proven track record of success. We understand that when our clients come to us, they are entrusting us with their most important personal and professional matters.
We believe that what sets us apart from other detective agencies is our holistic approach to each case. We work closely with our clients to understand their unique needs and concerns, and then we tailor our investigative services accordingly. No two cases are alike, and we believe that our approach reflects that.
In addition to our commitment to quality, we are also proud of our competitive rates. We believe that everyone should have access to the best detective services, and we work hard to keep our rates affordable.
If you are in need of investigative services, we encourage you to contact us today. We would be happy to discuss your specific needs and see how we can be of assistance.
20 years
Alliance Detective Agency has been providing top-quality investigative services to clients in need and is a Best detective agency in Delhi NCR.
Are You Looking For
Private Detective Agency In Delhi, NCR?
If you’re looking for a top-notch detective agency in Delhi, look no further than Alliance Detective. We have a team of experienced professionals who are experts at revealing the truth. We’ve helped countless clients resolve cases involving infidelity, missing persons, fraud, and more. No matter what your situation may be, we can help you get to the bottom of it.
Consultations
Cases
Lawyers
Private Detective Agency Delhi, NCR
Why Choose Us?
100% Confidentiality
100% Confidential & Discreet Your privacy is our highest priority. Every investigation is conducted with absolute secrecy, ensuring that your identity and the details of the case remain strictly confidential from start to finish.
Fast Turnaround
Fast & Evidence-Backed Results We don’t just provide information; we provide proof. Our team works 24/7 to deliver timely results, providing you with high-quality photos, videos, and documents that stand up as solid evidence.
Expert Matrimonial Specialists
Expert Matrimonial Specialists With a 90% success rate in matrimonial and infidelity cases, our expert team specializes in uncovering the truth. From collecting evidence of a cheating partner to providing full litigation support, we guide you through every step.
frequently asked questions
Yes, hiring a private detective in Delhi is legal as long as the investigation is conducted within the framework of Indian law. At Alliance Detective Agency, all investigations are carried out ethically and in compliance with applicable legal guidelines to ensure confidentiality and procedural safety.
We maintain 100% confidentiality from the first consultation to final report delivery. Your identity, case details, and findings are never disclosed to any third party. Discretion is our highest operational priority.
Where legally applicable, we provide structured documentation and evidence that can support legal proceedings. Reports are prepared carefully to align with investigative standards and relevant legal procedures.
The duration depends on the complexity of the case, scope of verification, and required surveillance. Most matrimonial and background investigations in Delhi NCR are completed within a structured timeline after initial assessment.
Yes, we specialize in pre-matrimonial background checks, post-marital verification, infidelity investigation, and divorce case support across Delhi NCR. Our team provides discreet and evidence-backed findings.
While we are based in Delhi NCR, our investigation network extends to Noida, Ghaziabad, Gurugram, Faridabad, and other major cities across India for inter-state cases.
You can call us directly or request a confidential callback through our website. One of our senior investigators will assess your case privately and guide you on the next steps.
We are just a call away
Area we serve
TESTIMONIALS
What Our Clients Say?
I was searching for the best Detective agency in delhi and thankfully I found Alliance Detective Agency. The agency has an excellent team of dedicated pre-matrimonial detectives that knows and understands its duties and responsibilities well. I am happy to mention that my sister is happily settled depending on the investigation report submitted by the agency! 
I am happy to express my happiness for the Alliance Detective Agency! I hired experts for matrimonial investigation. I have no hesitation to conclude that I eventually hire the best agency detective in Delhi. I was finding the right match for my sister. The agency promised me the best pre-matrimonial investigation and I am happy they kept the promise. 
Alliance Detective Agency is the best place for Pre-Matrimonial Investigation in Delhi. With the best private investigators, the company has the readiness to serve the clients at their best! 
One of the best detective agency in India especially recommended for infidelity investigations and person location services. Cases are handled discretely and timely. Kudos to Alliance Team for superior customer service and quality. Highly recommended. 