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      Private Investigators & Detectives in Naperville, IL

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      1. Tri County Investigations

      Tri County Investigations
      630-655-1313Call NowVisit Website
      Directions
      Private Investigators & Detectives

      621 Plainfield Rd Ste 204, Willowbrook, IL 60527

      OPEN 24 HOURS

      From Business: Tri County Investigations is a fully bonded, insured and state licensed investigative agency located in Hinsdale, Illinois. For almost 40 years, Tri County Investigations has…

      2. Pro Tech Security Service Inc

      Pro Tech Security Service Inc
      630-243-7500Call NowVisit Website
      Directions
      Private Investigators & DetectivesSecurity Guard & Patrol Service

      106 Stephen St, Lemont, IL 60439

      CLOSED NOW:Closed

      From Business: Established in 1998, Protech Security Services offers professional security guard, executive protection and investigation solutions. It is a full-service security firm that…

      YP
      14 Years
      in Business

      14. Millennium Investigations Pri

      Millennium Investigations Pri
      630-543-5500Call NowVisit Website
      Directions
      Private Investigators & Detectives

      358 W Army Trail Rd, Bloomingdale, IL 60108

      OPEN NOW:10:00 am - 4:00 pm

      19. Elite Process Serving

      Elite Process Serving
      630-299-4600Call NowVisit Website
      Directions
      Private Investigators & DetectivesProcess Servers

      16106 S Route 59, Plainfield, IL 60586

      CLOSED NOW:
      YP
      22 Years
      in Business
      Amenities:
      Wheelchair accessible

      20. G4S Secure Solutions

      G4S Secure Solutions
      708-562-0425Call NowVisit Website
      Directions
      Private Investigators & DetectivesSecurity Equipment & Systems ConsultantsSecurity Guard & Patrol Service

      701 Willowbrook Center Pkwy, Willowbrook, IL 60527

      CLOSED NOW:
      YP
      124 Years
      in Business
      Amenities:
      Wheelchair accessible

      29. Tri-County Investigations

      Tri-County Investigations
      630-655-1313Call NowVisit Website
      Directions
      5.0
      5.0
      Private Investigators & Detectives

      7 S Lincoln St, Hinsdale, IL 60521

      "TCI company is the greatest thing since peanut butter and jelly! Never overcharge very reasonable in pricing and willing to go the extra mile to complete the task at hand. This…"

      30. Conrad Polygraphy & F L Hunter & Associates

      Conrad Polygraphy & F L Hunter & Associates
      630-920-0571Call NowVisit Website
      Directions
      Private Investigators & DetectivesLie Detection Service

      930 N York Rd, Hinsdale, IL 60521

      From Business: Conrad Polygraphy & FL Hunter & Associates, Inc., has provided lie detection services in Hinsdale, Illinois, since 1978 for businesses, governments, and private individuals. We…

      We found 208 results for Detectives in or near Naperville, IL.They also appear in other related business categories including Law Enforcement Agencies-Government, Private Investigators & Detectives, and Government Offices. 8 of the rated businesses have 4+ star ratings.


      The businesses listed also serve surrounding cities and neighborhoods including Will-O-Way, Blackhawk, and Brighton Ridge. These businesses offer their services in one-or-more of the following languages: and Spanish.