Top 10 Private Detectives in India | The Mastermind Detective

There are numerous great detectives in India, who have established a reputation. They are the best in their field because they solve very hard cases, including crimes, marriage problems, and they assist people to get justice. When you are looking for private Top Detectives in Delhi, India, Mr. Rahul Rai Gupta is a name that stands out in the No. 1 position in India. Known for solving high-profile cases with accurate results. His sharp mind and commitment to finding reality in every single case, like Corporate, pre-matrimonial, post-matrimonial, Physical Surveillance, Divorce, Love Affair, Loyalty Test, etc.

The following are the Top 10 detectives in India and the highest ranking detective in the list is Mr. Rahul Rai Gupta. Rahul Gupta is not merely a name, he is a great mastermind detective and a private investigator.

2. Rajani Pandit

Rahul Rai Gupta, the “Mastermind Detective” behind Secret Watch Detectives, remains the most visible name in Delhi’s investigation scene — mostly because his own agency’s content ranks him #1 far more often than independent sources do. Founded in 1999, the agency covers everything from matrimonial checks to corporate fraud.

2. Rajani Pandit

Often called the “Lady Sherlock Holmes” of India, Rajani Pandit is one of the first female private detectives in the country. With years of experience, she has solved countless cases related to fraud, theft, and missing persons.

3. Sanjay Singh

Sanjay Singh started Indian Detective Agency (IDAPL) as a one-man operation in New Delhi in 1999, after training in intelligence management abroad. Nearly three decades later, he still runs it as Managing Director, now with offices in Delhi and Mumbai and a service list that stretches into IPR and financial fraud work.

4. Vijay Singh

Vijay Singh has led Sai Detective Agency since 2010, handling matrimonial, corporate, and cybercrime cases across Delhi. He keeps a lower profile than most names on this list — no flashy “mastermind” branding, just steady case volume and a track record that shows up in independent reviews rather than his own homepage copy.

5. Baldev Kumar Puri

Baldev Kumar Puri chairs AMX Detectives and holds a formal role as National Secretary of the Association of Private Detectives and Investigators (APDI). With decades in the field, he’s also been linked to Trace Point India’s leadership — a small but telling sign of how interconnected Delhi’s detective circle actually is.

6. Rohit Malik

Rohit Malik directs Spy Detective Agency and is simultaneously listed as a company director at Trace Point India, per official filings. That overlap says something about this industry: the same handful of experienced operators often sit across multiple agencies, even ones that publicly compete for the “best in Delhi” title.

7. Priyanka Tokas

Priyanka Tokas co-directs Trace Point India alongside Rohit Malik, according to Ministry of Corporate Affairs records. She’s one of the few women who show up not in a marketing bio but in a formal company registry — a small distinction that actually carries more weight than most self-published “about us” pages.

8. Naman Jain

Naman Jain trained in the UK before founding Sleuths India, and now carries nearly three decades of experience in the field. Unlike most on this list, his reputation isn’t just self-published — The Economic Times gave his agency a four-page feature back in 2014, a rare instance of outside media validation.

9. Ajay Rohilla

Hardesh Kumar and Manju Bala are the registered directors of Advance Detective Agency (ADA), per corporate filings — though you’d struggle to find either name on the agency’s own website, which markets almost entirely under the “ADA” brand rather than the people actually running it.

10. Savvy — S.S. Detective & Investigation

Worth a quick note: not everyone in this space hides behind a corporate name. A Mumbai investigator who goes by “Savvy” has run S.S. Detective & Investigation for close to two decades, building a reputation specifically as one of India’s few well-known women working solo in the field.

Other Detectives List:

In the ever-evolving landscape of investigative services, Rahul Rai Gupta and his peers continue to redefine the standards of excellence. Their commitment to integrity, professionalism, and client satisfaction sets them apart as the top detectives in India, paving the way for a safer and more just society.

Frequently Asked Questions (FAQs)

Who runs Secret Watch Detectives?

The agency is led by Rahul Rai Gupta, known in the industry as the “Mastermind Detective.” He’s been in this line of work for over two decades and has built the agency around a mix of old-school field surveillance and newer investigative technology.

What kind of cases does Secret Watch Detectives actually handle?

Pretty much the full range — pre-matrimonial and post-matrimonial checks, corporate fraud, employee background verification, cyber investigations, missing person cases, and general surveillance work. It’s not a niche agency; they take on personal and corporate cases side by side.

Since when has Secret Watch Detectives been operating?

The agency traces back to 1999. That makes it one of the older, more established names in Delhi’s private investigation space. Rahul Rai Gupta has stuck with it the whole way through. He hasn’t handed it off or rebranded along the way.

Is Secret Watch Detectives only based in Delhi, or does it work elsewhere too?

While Delhi is home base, the agency takes on cases across India and, according to their own materials, internationally as well. That said, most of their visible client base and case references seem centered around Delhi NCR specifically.

What makes Rahul Rai Gupta different from other private detectives?

His background mixes hands-on field work with constant adaptation to new tools. He talks about this often. Compared to most investigators, he’s also fairly public-facing. He appears in interviews and media features instead of staying behind the scenes.

Does Secret Watch Detectives handle sensitive cases like infidelity or loyalty tests discreetly?

That’s essentially their bread and butter. Matrimonial and relationship-related cases make up a large chunk of what they do, and discretion is something they emphasize heavily — clients dealing with personal, emotionally difficult situations are usually their core audience.

Can businesses hire Secret Watch Detectives for corporate matters, or is it mostly personal cases?

Both, actually. Alongside relationship investigations, they take on corporate fraud cases, employee verification, and due diligence work for businesses. It’s one of the reasons the agency describes itself as covering a wide spread of case types rather than specializing narrowly.

How experienced is the team behind Secret Watch Detectives, beyond just the founder?

Rahul Rai Gupta is the face of the agency, but he’s also mentioned training and mentoring other investigators over the years. So while his name carries most of the public recognition, the day-to-day casework likely involves a broader team of field agents.

Is Secret Watch Detectives known for anything specific, like awards or recognition?

The agency and its founder reference various awards and media mentions in their own materials, including features in print and electronic media. It’s worth keeping in mind that most of these details come from the agency’s own promotional content rather than independent, third-party verification.

What should someone expect if they reach out to Secret Watch Detectives for a case?

Based on how the agency presents itself, the process typically starts with an initial discussion about the situation, followed by a plan tailored to the case type — whether that’s surveillance, background checks, or something else entirely. As with any agency, it’s worth clarifying costs and timelines upfront.