Prompt and Experienced Security Personnel Dedicated to

Your Safety

Click this text to start editing. This block is a basic combination of a title and a paragraph. Use it to welcome visitors to your website, or explain a product or service without using an image. Try keeping the paragraph short and breaking off the text-only areas of your page to keep your website interesting to visitors.

Protecting You and

Your Assets

In today’s world, security is important. Threats are ever-evolving within today’s environments, which is why risk prevention is vital. That’s where M&M private Investigation/protective security comes in. We determine and mitigate dangers before they happen. All of our security solutions are tailored to suit the needs of every individual or business.


Whether you require private investigation, personal safety, or a security assessment, we are the company to call. Although we are located in Crofton, we serve clients in Maryland.

Your Peace of Mind Is Our Priority 

When hiring M&M Private Investigation, you have to make sure that the agency or person is working with a state license. Licensing varies from state to state, so don’t forget to ask for the necessary documentation that proves they are authorized to do business in that particular area.


At M&M private Investigation/protective security, we guide you through the process during a no-obligation phone consultation. We will discuss all of the available options to help you make a well-informed decision. Our team understands that every situation is unique to each client and discretion is one of your top concerns. Rest assured that the information you disclose with us will be treated with the utmost confidentiality. 

Our Mission

Page subtitle

Our mission is to serve the state of Maryland, providing superior and one-of-a-kind services for both residential and commercial clients/properties. We’d like to think that our platform is geared toward exceeding your expectations. Our emphasis is on value, integrity, and professionalism. We are also a customer-driven agency with an enthusiastic desire to meet your distinctive goals.

Edit button text

Biography

Our owner, Calvin Martin, is a retired law enforcement and security executive with a career spanning more than 38 years. For 21 years, he served the Army, military police, and support criminal investigation division. He also worked in private corporate security for more than 7 years and the federal government for more than 18 years.


Calvin is also a dynamic administrator with a proven track record in anti-terrorism and security risk assessment, security policy and program development, and implementation. He takes pride in having extensive experience in managing sensitive compartmented information facilities construction and classified national security information.

Client Testimonials 

Coming Soon

Click Here to Add a Title

Click this text to edit. Tell users why they should click the button.

View Our Services