Private Investigators in Frederick, MD

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Associated Investigation LTD

1. Associated Investigation LTD

(800) 720-8955

Serving the
Frederick Area


Found Gil & Associated to be extremely prompt, professional and just generally awesome in our civil rights case w/ RE to locating a witness

AAA Credit Bureau

2. AAA Credit Bureau

(844) 775-4536

Serving the
Frederick Area

From Business: AAA CREDIT BUREAUAAA Credit Bureau has been providing credit, criminal and eviction reports for landlords since 1990. We offer two types of reports: basic credit…

Tim May Investigations

3. Tim May Investigations

(301) 695-2662

10 W College Ter Ste 210
Frederick, MD 21701


This guy is a total scam artist. He is supposedly a pastor, ha ha. He took my money and never did any work and has not responded to any of my…



(240) 310-8079

326 W Patrick St
Frederick, MD 21701

From Business: Private Detective Agency & Security Services

Maryland Bureau of Investigations

5. Maryland Bureau of Investigations

(410) 775-2100

PO Box 55
Frederick, MD 21701

United States Government

6. United States Government

(301) 663-3469

1003 W 7th St
Frederick, MD 21701



(301) 261-1029

110 Thomas Johnson Dr
Frederick, MD 21702

Private Investigative General Services

8. Private Investigative General Services

(301) 432-7447

5235 Westview Dr
Frederick, MD 21703

Professional Investigation Services Inc

9. Professional Investigation Services Inc

(301) 662-2008

4949 New Design Rd
Frederick, MD 21703

Frederick Police Department

13. Frederick Police Department

(301) 600-2101

100 W Patrick St
Frederick, MD 21701

From Business: The Frederick Police Department operates through communications, community services, human resources, patrol and special operations divisions. Its criminal…

Guardian Security And Investigation

14. Guardian Security And Investigation

(301) 668-5060

3851 Shadywood Dr
Jefferson, MD 21755

Schroeder & Asso. Investigations

15. Schroeder & Asso. Investigations

(410) 635-8605

505 Windy Knoll Dr Unit 737
Mount Airy, MD 21771

From Business: 30 years as a Legally Licensed, full service, defense based agency.

Alco Investigations Inc

16. Alco Investigations Inc

BBB Rating: A+
(301) 829-5100

106 Prospect Rd
Mount Airy, MD 21771

EYES ON Investigations Ltd

17. EYES ON Investigations Ltd

(301) 956-9453

Proudly serving
Frederick, 21701



(410) 645-0428

Mount Airy, MD 21771

Fallin Investagative Services

19. Fallin Investagative Services

(301) 468-7010

108 East Rd
Mount Airy, MD 21771

Air-Arm Security and Investigation Services

20. Air-Arm Security and Investigation Services

(240) 400-0448

12402 Linganore Ridge Dr
Monrovia, MD 21770

From Business: When you need professional security services or a private investigator, you're in good hands with Air-Arm Security Investigation Services LLC. We provide…

Investigative Services

21. Investigative Services

(410) 875-9510

505 Windy Knoll Dr
Mount Airy, MD 21771

From Business: Defense Based

Guardian Security & Investigation

22. Guardian Security & Investigation

(301) 668-5060

Serving the
Frederick Area

From Business: Guardian Security and Investigation is the premier investigative service provider in the Mid-Maryland Area. Why is Guardian the top service provider? Because…

Attorneys Collectors & Investigators

23. Attorneys Collectors & Investigators

(888) 258-5298

Serving the
Frederick Area


Dear Mr. Aguirre,My wife and I would like to thank you for resolving our long-standing difficult debtor issue. We were very pleased with the work…

Debt Collection Firm

24. Debt Collection Firm

(800) 731-7308

Serving the
Frederick Area


You guys are great we will definitely be using your services again! We really appreciate your hard work with our account!​

Cops Investigation Services

25. Cops Investigation Services

(301) 791-7039

111 Potomac St
Boonsboro, MD 21713

Vital Information Services

26. Vital Information Services

(301) 432-8999

900 Brookridge Dr
Boonsboro, MD 21713

Hewett & Associates

27. Hewett & Associates

BBB Rating: A+
(800) 776-5069

PO Box 463
Keedysville, MD 21756

Blue Raven, Inc.

28. Blue Raven, Inc.

(703) 794-5722

41500 Carter Ridge Ln
Leesburg, VA 20176

From Business: In 2015 Michael along with many of his colleagues concurred that there was a lack of honest and effective private security companies in the DC Metro area, as…

Odyssey Judgment & Title, LLC

30. Odyssey Judgment & Title, LLC

(276) 880-7903

P O Box 151263
Alexandria, VA 22315

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