Welcome to MARLIN’S SPECIAL INVESTIGATIONS, INC. (MSI). MSI is an Iowa Private Investigative Agency located in Cedar Rapids, Iowa. Established in 1994, MSI offers a wide variety of Investigative Services for Attorneys, Insurance Companies, Businesses, Private Individuals and other Private Investigative Agencies. Although we are located in Cedar Rapids, we work with clients all over Iowa and the entire U.S. 

Our Investigators are licensed, bonded and Insured.  The State of Iowa requires all Private Investigators be licensed by the Iowa Department of Public Safety. All reports and correspondance with the client are kept confidential. The initial consultation is free so please call to see if we can assist you. Over one thousand cases have been worked over the years, providing the necessary knowledge, skill and experience to work successfully on your case.  Our investigators have testified on numerous cases and can testify for your case if needed. MSI uses video, covert video, GPS trackers, cameras and database resources to meet your investigative needs.

Jeff Marlin, a former police officer is owner of MSI and has over 20 years of investigative experience. Mike Marlin, a retired Iowa Division of Criminal Investigation (DCI) Special Agent has over 40 years of investigative experience. Mike is currently retired from MSI but remains on as a consultant. Please contact us to see if we can assist you with your case.

Marlin’s Special Investigations, Inc.
PO Box 11183
Cedar Rapids, Iowa 52410-1183
Office: (319) 373-5025
Toll Free: 1-866-373-5440
Email: jmarlin@marlinsspecialinvestigations.com

PI Magazine Accepting all Major Credit Cards
Member of Iowa Association
of Private InvestigatorsIAPA


 Specializing in service to the following cities:
Cedar Rapids | Dubuque | Iowa City | Coralville | Davenport | Des Moines | Burlington | Fort Madison |
| Keokuk | Ottumwa | Ames | North Liberty | Charles City | Mason City | Manchester | Maquoketa |
| Clinton | Anamosa | Bettendorf | Muscatine | Mount Pleasant | Independence | Decorah |
| Fairfield | Oskaloosa | Marshalltown | Waterloo | Cedar Falls | Council Bluffs | Sioux City | Fort Dodge |
Eastern Iowa and the surrounding communities