Mcgrath Investigative Services LLC
We’ll Get to the Bottom of it

Welcome to McGrath Investigative Services LLC

With over 27 years of experience, you can trust that our company will get you the results and information you need.  We have a deep working knowledge of the New Hampshire court system and the best way to navigate them in order to maximize the use of our investigations.  Be it civil, criminal, marital or surveillance needs we have you covered.  Please contact us today to schedule a meeting and don’t hesitate to give yourself the best fighting chance in an ever changing legal landscape.

Additional Features

What Sets Us Apart

Experienced and professional

McGrath Investigative Services LLC
prides itself on it’s knowledge and ability to navigate very difficult and trying situations in a professional and legal manner.  Rest assured your case is in the right hands when you hire us.

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Our Services

At McGrath Investigative Services LLC, we offer a comprehensive suite of private investigation services, from detailed background checks and diligent surveillance to expert interviews and beyond, all designed to provide you with the clarity and resolution you seek.

At Mcgrath Investigative Services LLC, we deliver unparalleled process service with a commitment to precision, speed, and utmost discretion, ensuring your legal documents are served with the professionalism your case demands.

Mcgrath Investigative Services LLC utilizes cutting-edge technology and strategic expertise to conduct discreet surveillance operations, providing you with the critical information you need without compromising confidentiality.

Mcgrath Investigative Services LLC offers comprehensive background checks, meticulously verifying information to ensure accuracy and integrity, while maintaining the highest standards of privacy and discretion for all involved.

Mcgrath Investigative Services LLC brings a wealth of expertise and relentless determination to every investigation, employing advanced techniques and a meticulous approach to uncover and compile pivotal evidence, guiding you to the clarity and resolution you seek.

With a keen eye for detail and a vast network of resources, Mcgrath Investigative Services LLC excels in conducting in-depth research tailored to your specific needs, ensuring you receive accurate, comprehensive insights for informed decision-making.

Mcgrath Investigative Services LLC conducts professional and tactful interviews, leveraging expert communication skills to gather critical insights, ensuring each conversation is approached with the sensitivity and respect it deserves.

Other Services

For those unique situations requiring specialized attention, McGrath Investigative Services LLC offers a tailored range of Other Services to meet your precise needs, ensuring comprehensive support beyond the conventional.

Cyber Investigations New Hampshire
Cyber Investigations

Specializing in uncovering digital footprints, data breaches, and online fraud.

Asset Searches

Locating tangible and intangible assets for legal, financial, or personal reasons.

Insurance Fraud Investigations

Investigating suspicious claims to uncover evidence of fraud against insurance companies.

Witness Location and Statements New Hampshire
Witness Location and Statements

Finding witnesses to legal events and obtaining their statements or depositions.

Risk Assessment and Management New Hampshire
Risk Assessment and Management

Evaluating security risks for individuals or businesses and providing strategies to mitigate those risks.

GPS Tracking

Utilizing GPS technology for vehicle and asset tracking to support various investigation needs.

Child Custody and Family Law Investigations

Gathering evidence for use in family law matters, including child custody cases.

Corporate Due Diligence New Hampshire
Corporate Due Diligence

Conducting thorough investigations to ensure the security and integrity of corporate mergers, acquisitions, or partnerships.


Mcgrath Investigative Services LLC's Mission

McGrath Investigative Services LLC is known for employing some of the most experienced and educated investigators in the area. That’s because after years of experience working both small and large scale cases, our world-class investigators understand what it takes to get the results you need.

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Over 27 Years Of Service

We consistently adhere to strict quality and privacy standards in order to ensure our work remains unbiased, relevant, and accurate. After all, in-depth and responsible research is a main pillar at our company. Set up your initial consultation and learn what our Private Investigation Firm can do for you.


Core Values

Our core values of Integrity, Confidentiality, Diligence, and Empathy guide every aspect of our work, ensuring that McGrath Investigative Services LLC remains your trusted partner in uncovering the truth and providing peace of mind.


We Are

The Best Private Investigator in New Hampshire

With an unwavering commitment to excellence and results, McGrath Investigative Services LLC stands as the premier choice for those seeking the utmost in professionalism, discretion, and expertise in New Hampshire.


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