Detectives in Portland, ME

Comprehensive list of private detective agencies and investigators servicing Portland, ME.

Business Listings

Maine Private Investigators - specialize in all civil cases including corporate investigations, divorce, spousal surveillance, locates, missing persons, personal protection, and process serving to name a few. Please visit our website or call us at (207) 775-5656 for a free consultation.

  • I have used Cunningham Investigations in the past and have had great results. I would

Lawyers Investigating Service., a Maine-based corporation, supplies a huge array of services to attorneys, businesses and personal customers. All matters are kept confidential. Our investigators are well skilled, bonded, licensed and insured. Maine Private Investigators are the only licensed entity to be overseen by the Maine State Police. We would have it no other way.


Calderbank Investigations is a complete-service private investigation agency situated in Portland, Maine. We supply a huge array of professional services for insurance firms, law firms, huge or tiny businesses, and private individuals. Witness Location and Interviews See our Services page for more information.

  • They will not call back, answer emails, or provide proof of service.


1st Protection Services. is a fully-licensed, bonded, and insured Security Service. First Protection Services. has become one of the fastest developing Security Agencies within the industry. One of the reasons why First Protection Services. is unique within the Security guard industry is because of its dedication to Maine Security Service innovation.


A cold case is a criminal or missing persons case that has gone unsolved for a longer period of time. Law enforcement agencies are most successful in an investigation that starts and ends in a period of days or months after an incident is reported. It is then that victims come forward, fresh evidence can be collected and witnesses and suspects are identified.


Corporate Intelligence. is professionally staffed, licensed and bonded in Maine and New Hampshire. The firm is heavily experienced. Its investigators employ state of the art technology as such relates to surveillance and electronic covert monitoring. Investigators have offered testimony and admitted evidence in state courts, federal courts, and at administrative hearings.


Full service private investigation agency proving confidential, professional and discreet investigative services. We offer a wide array of services such as surveillance, insurance fraud and insurance claim investigations, background checks as well as legal and asset investigations. We promise a professional, discreet and cost effective service to you. We believe in building long term relationships


It is Agency's hope that this law will take effect in mid-September. I invite all couples to visit the Weddings page for more information. Agency looks forward to being of service. Agency is a female owned & operated investigation company. Although centrally situated in Augusta, Maine, Agency is willing and capable to supply investigative services across the whole state.