Do you need help
protecting your family
or business?

We provide a wide range of security services to ensure that you
and your loved ones are safe and protected. You can trust us to
handle any situation with professionalism and discretion.

We understand that investing in security services can take time and effort. That’s why we’ve created
this guide – to help you choose the right services for your needs.

Download our guide to get started on finding the right security
services for your needs.

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Merrill's team of experienced professionals are intimately familiar with the geography, resources, and
culture where they are operating. With a coverage area expanding in 35 states and Canada we are
ready and able to deploy at a moments notice.

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Founded in 1986 by Retired Maine Game Warden Major Charles A, Merrill, Merrill's Investigation and Security has spent the past 37-years building our reputation as the best, most reliable, and easiest to work with investigation and security firm in the industry.

In 1999 the company added security and executive protection to its suite of services.

In 2004, after a ten-year affiliation with Merrill’s and 21 years in law enforcement, Michael C. Harrington Sr. acquired the company.

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  • Their staff is second to none, they have always provided staff that were willing to go the extra mile and lend assistance where needed. Prompt, courteous and dressed for the occasion whether it was work attire or business formal and their reporting and intelligence gathering is beyond compare.

    If you are looking for security services that are small enough to be tailored to your needs, with better resources than most large security service companies, you cannot go wrong with Merrill Investigative Services.

    - Energy Client
  • Utilizing trusted, outside contractors is often the only way to get the job done. For me, Merrill's filled that role and never let me or the company down.

    - Energy Executive
  • I have been very pleased with the quality of their surveillance work including video and file reports, prompt service and professional expertise while testifying in many cases thru the litigation process. Their flexibility for coverage is outstanding along with their many combined years of experienced law enforcement and private investigative staff. I highly recommend Merrill Investigative & Security for any services that you may need.

    - State Government Client
  • On several occasions over the last 14 years we have placed calls to Merrill’s with a need for a security detail for either specialized construction equipment and at our facilities.

    The vast majority of these requests were of urgent nature with very little notice and Merrill’s has always met our needs and provided the security experts needed. The security details have been as short as a single night to several months and each job was treated with the same thoroughness and preparation. The individuals providing the security details mirror the investigators; highly professional and work with us to meet our needs.

    - Energy Client Manager

our latest blog posts

Our new website provides our existing and prospective clients a simple yet interactive view of our work and the services we offer. Stay tuned to our blog for new ideas!

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contact Merrill's
And Security Services

We have a simple promise to all of our clients;
stand behind our results.

Available 24/7

call today!

Our team is highly trained and experienced in every type of situation, so you can be confident that
we will get the job done right. We understand that safety is a top priority for everyone, so let us
help you take care of yourself, your family, and your business.

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