Address: Shelton, CT 06484

Private Investigators in Connecticut

Connecticut Investigative Services

In an insecure world, investigate your options with Connecticut Investigative Services.

Best Private Detective Agency Connecticut

Private Investigators CT

Hartford Private Investigator
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Private Investigators CT


Looking for a trusted private investigator in CT? Find out why our CT private investigators are the first choice of Connecticut’s most prestigious law firms, private citizens and businesses throughout the State and are named year after year “The Best” investigators in CT. Do your research when selecting a Connecticut private investigator it is an important decision. Use many different sources to evaluate and select a CT private investigator or investigative agency. Check the internet, contact the Better Business Bureau and read the investigative agency’s client reviews. Connecticut Investigative Services’ private investigators are the most experienced private investigators you will find in any investigative agency. We maintain an A+ rating by the Better Business Bureau. Contact our agency and you will find that your decision was an excellent one. Even if you have dealt with other Connecticut private investigators, contact our office and see what our experienced investigators can do to assist you.

Private Investigators CT

We are a results-oriented private investigator in CT, committed to providing you quick responses and timely, accurate, results. Our CT private detectives are well-trained, experienced, veteran police detectives applying their skills as investigators for the benefit of corporate entities and individual citizens.




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Trained & Experienced Private Investigators in CT

Results Oriented Private Investigators

CIS private detectives combine both law enforcement and private sector investigative knowledge to ensure you the best possible results for your investigation. Our private investigators can answer your questions quickly, accurately and to your full satisfaction. This communication and experience enables our private investigators in CT to provide our clients with the best possible outcomes to their cases. We provide professional, confidential investigative and related services to our clients. Connecticut Investigative Services utilizes the latest technology and computerized informational resources along with superior Detectives’ skills. We have been able to compile the expertise to effectively investigate even the most challenging of cases. CIS private investigators in CT have professional associations with the law enforcement community as well as private investigators, detective agencies and professional organizations throughout Connecticut – and the country.

Mark J. MacDaniel
Founder & Owner
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Serving Connecticut

Our Investigative Services

Our trained Connecticut private investigators have extensive real-world investigative knowledge all across the State of Connecticut conducting: criminal investigations, civil investigations, background investigations, pre-employment investigations, surveillance, locating missing persons, interviewing witnesses, theft and burglary investigations and investigations requiring an undercover investigator. Our CT private investigators are located in Connecticut but we have a nationwide and global reach. We serve the State of CT with the finest private investigators and detectives that you will find at any investigative agency. When searching for a private detective agencies, find out why Connecticut Investigative Services and their investigators were named one of the best private investigative agencies in CT by the Connecticut Law Tribune.

Document Retrieval Services in CT

Connecticut Investigative Services is a public records and document retrieval service for attorneys businesses and private citizens in the

Insurance Fraud Investigators in Connecticut

Connecticut Investigative Services can investigate insurance claims that help insurance companies and the self insured fight fraudulent insurance claims.

Corporate & Business Private Investigator in CT

CIS' private investigators can assist your businesses, whether you are a large corporation or a small business trying to

Criminal Investigators in CT

Connecticut Investigative Services’ private investigators understand the requirements of attorneys and their clients who are involved in criminal litigation.

Civil Investigators in CT

As an investigator in a civil matter Connecticut Investigative Services would be responsible for gathering the evidence essential to

Civil & Criminal Investigative Services in CT

Connecticut Investigative Services' private investigators understand the requirements of attorneys and their clients who are involved in criminal or

Surveillance Investigators in CT

Connecticut Investigative Services' Investigators use covert surveillance equipment that ranges from discrete automobile tracking equipment (GPS) to hidden video

Pre-Employment Screenings & Background Checks in CT

When you need actual information on a person’s background not just database information offered through the internet, choose Connecticut

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What Clients Say About CIS

Real Testimonials & Reviews

A very prompt response to the information I needed. They are very professional and I am impressed.
Laura C.
15:03 30 Aug 21
Great services to go through! Thank you Detective Mark McDaniel! I would recommend them to anyone in the CT more
Jarrad B.
15:45 01 Mar 21
We were at a stand still until Detective Mark McDaniel with CTinvestigative services located our tort-feasor sought. Now ourcase can proceed. His service is invaluable for that attorneyseeking parties when building his case. Thank you Det. McDaniel!read more
Lawrence S.
03:46 10 Feb 21
Lighting fast response, dead on accuracy, very pleasant & professional service. It's what all companies should strive to more
John Tatoian Enterprises John A. Tatoian JD E.
13:29 02 Feb 21
I am so impressed by how quick and thorough CIS was in getting back to me with the report we needed. I have a civil litigation practice. Highly recommended!read more
Refai A.
20:14 10 Dec 20
Love this place.great food and atmosphere...
Lucien O.
15:36 04 Sep 20
To say that Mark is fantastic is an understatement! He was quick to respond, knowledgeable and one of the kindest people I have encountered. Mark has renewed my faith in humanity. Thank you Mark!read more
Rachàel G.
23:26 25 Aug 20
brian M.
17:26 05 Feb 20
Fantastic! I stumbled upon Mark and Connecticut Investigative Services after our law firm's prior private investigator retired. Mark was very easy to get a hold of and took my call promptly. I advised him of our client's budget and he was very sensitive to our cost concerns. Mark was able to work within my timeline and achieved the desired results promptly and thoroughly. He was pleasant and professional and I look forward to working with him and his team on our next assignment. I am grateful for finding him and would recommend him and his agency without hesitation. -Matthew E. Willis, more
Matthew W.
23:17 18 Apr 18
Outstanding. I spoke to Mark and it was clear he's been through every kind of investigation, even when in my case it's felt like such a dead end. If you feel trapped or don't have a way or someone to turn to, you will feel completely differently after having a good conversation with him and his staff. Don't hesitate, make the phone call, I think you'll be surprised how much of a nudge it can give you towards solving your situation, I feel so much better about my chances and all it took was maybe 10 minutes. Make the callread more
Ralph B.
01:12 07 Jun 17
The investigator was absolutely fantastic! I cannot speak highly enough about him. He found an old traffic ticket that no one else could find within hours! Great company!read more
Jeremy M.
19:09 05 May 16
My law firm hired CIS. They got us the info. we needed fast and efficiently. I would recommend their services to anyone needing an more
Brian M. R.
19:50 26 Aug 15
I recently needed the service of an investigator when I came across this company. They went far and beyond any expectations; I highly recommend more
Carlos M.
23:01 22 Apr 14
Referred several clients to them who have been very satisfied with the services. Responsive and sensitive to the issues more
Daniel S.
15:48 07 Jun 12

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Our Memberships

Private Investigators in CT • Licensed. Experienced. Professional.

When protecting your assets or uncovering the facts, experience matters. At Connecticut Investigative Services our investigators are just that, experienced. Choose a firm whose Investigators’ experience is a matter of record. Contact our private investigators in CT for a free consultation to discuss your investigative needs. All Connecticut Investigative Services’ detectives are licensed and bonded in CT. Connecticut Private Investigative Agency license number – A2288.