Header Graphic


Professional Investigations

Statewide Process Serving / Litigation Support

       About Nason Investigations

75 South Main Street
Unit 7 # 302
Concord, NH 03301 (603) 748-1660

New Hampshire's Only Father / Daughter Investigative Team

Chief Seldon E. Nason Jr. (Ret.)    Owner / Chief Investigator

Seldon (Don) Nason is a 30 year veteran of law enforcement and the investigation field in New Hampshire.  He worked his way through the ranks as a patrolman, sergeant, lieutenant and police chief.  During his career, he spent 13 years as a police court prosecutor and was an adjunct instructor in juvenile law with NH Police Standards & Training.  He was a firearms instructor, simunitions instructor and use of force instructor and was trained as a hostage negotiator with the Central NH Special Operations Unit. He has been appointed twice by Governor John Lynch, Governor Maggie Hassan and the NH Executive Council to the Investigative and Security Agencies Advisory Board, is the immediate past president of the NH League of Investigators and belongs to various state and national professional investigative associations.

Chief Nason obtained his Associate's Degree in Criminal Justice from NHTI and his Bachelor's Degree in Behavioral Science from Granite State College.  He is currently enrolled in the Massachusetts School of Law's Juris Doctorate Program. Chief Nason is also trained in Emergency Medical Services, Homicide/Death Investigation, Child Abuse Investigation,  Fugitive Recovery, Incident Command, School Threat Assessment, Crisis Response, Tactical Communications, Statement Analysis, Drug Surveillance/Investigiation, DWI/Gaze Nystagmus, Skip Tracing, PI Legal Strategies, Cold Case Investigations, K-9 Search, Rescue & Recovery Techniques, and other various disciplines.

Kristin M. Nason, Director of Operations

Kristin has 6 years of private investigation experience and earned her Masters in Business Administration through Plymouth State University. She obtained her Bachelors degree with PSU as well. Ms. Nason is specializes in surveillance and background investigations. She is also trained in Private Investigation Strategies, Fugitive & Asset Recovery, Skip Tracing, Process Serving, Missing Persons Investigations, Case Management and Communications.  Beyond supervising office functions, scheduling and personnel, Kristin conducts investigations, serves process, handles fugitive recovery and missing persons cases, conducts fraud investigations, manages case files and maintains client accounts.  She also assists attorneys in filing court paperwork and with other litigation support.

Associates & Networks

It would be difficult to handle our caseload and provide expert service without the assistance of our other licensed associates.  Nason Investigations has several private investigators licensed through its agency and networks with the NH League of Investigators and other assocations here in the U.S. and around the world. These investigators and professionals play an important role in our cases when we need to reach out for additional manpower or other points of expertise.  Being able to "call for back up" when necessary enables us to provide the best service for our clients while maintaining control over each case individually.

Case Experience

We make no limits on where we go to work a case and what we investigate.  We have worked cases in and from the United States, Puerto Rico, Canada, England, France, Italy and Poland.  We have the resources to put us in contact with authorities throughout the world and we consider no case too large or too small.  We always have the resources on board or right at our fingertips. Our contacts throughout law enforcement and other investigative firms are always growing and allow us to reach out and find the information that many other firms cannot.


















































Professional private investigator, private detective, process server, litigation support, fraud investigator, worker's compensation investigator, surveillance investigator, insurance investigator for these towns in New Hampshire

| Acworth, NH | Albany, NH | Alexandria, NH | Allenstown, NH | Alstead, NH | Alton, NH | Amherst, NH | Andover, NH | Antrim, NH | Ashland, NH | Atkinson, NH | Auburn, NH | Barnstead, NH | Barrington, NH | Bartlett, NH | Bath, NH| Bedford, NH | Belmont, NH | Bennington, NH | Benton, NH | Berlin, NH | Bethlehem, NH | Boscawen, NH | Bow, NH | Bradford, NH | Brentwood, NH | Bridgewater, NH | Bristol, NH | Brookfield, NH | Brookline, NH | Campton, NH | Canaan, NH | Candia, NH | Canterbury, NH | Carroll, NH | Center Harbor, NH | Charlestown, NH | Chatham, NH | Chester, NH | Chesterfield, NH | Chichester, NH | Claremont, NH | Clarksville, NH | Colebrook, NH | Columbia, NH | Concord, NH | Conway, NH | Cornish, NH | Croydon, NH | Dalton, NH | Danbury, NH | Danville, NH | Deerfield, NH | Deering, NH | Derry, NH | Dixville, NH | Dorchester,NH | Dover, NH | Dublin, NH| Dummer, NH | Dunbarton, NH | Durham, NH | East Kingston, NH | Easton, NH | Eaton, NH | Effingham, NH | Ellsworth, NH | Enfield, NH | Epping, NH | Epsom, NH | Errol, NH | Exeter, NH | Farmington, NH | Fitzwilliam, NH | Francestown, NH | Franconia, NH | Franklin, NH | Freedom, NH | Fremont, NH | Gilford, NH | Gilmanton, NH | Gilsum, NH | Goffstown, NH | Gorham, NH | Goshen, NH | Grafton, NH | Grantham, NH | Greenfield, NH | Greenland, NH | Greenville, NH | Groton, NH | Hampstead, NH | Hampton, NH | Hampton Falls, NH| Hancock, NH | Hanover, NH | Harrisville, NH | Hart's Location, NH | Haverhill, NH| Hebron, NH | Henniker, NH | Hill, NH | Hillsborough, NH | Hinsdale, NH | Holderness, NH | Hollis, NH | Hooksett, NH | Hopkinton, NH | Hudson, NH | Jackson, NH | Jaffrey, NH | Jefferson, NH | Keene, NH | Kensington, NH | Kingston, NH Laconia, NH | Lancaster, NH | Landaff, NH | Langdon, NH | Lebanon, NH | Lee, NH | Lempster, NH | Lincoln, NH | Lisbon, NH | Litchfield, NH | Littleton, NH | Londonderry, NH | Loudon, NH | Lyman, NH | Lyme, NH | Lyndeborough, NH Madbury, NH | Madison, NH | Manchester, NH | Marlborough, NH | Marlow, NH | Mason, NH | Meredith, NH | Merrimack, NH | Middleton, NH | Milan, NH | Milford, NH | Milton, NH | Monroe, NH | Mont Vernon, NH | Moultonborough, NH | Nashua, NH | Nelson, NH | New Boston, NH | New Castle, NH | New Durham, NH | New Hampton, NH | New Ipswich, NH | New London, NH | Newbury, NH | Newfields, NH | Newington, NH | Newmarket, NH | Newport, NH | Newton, NH | Northfield, NH | North Hampton, NH | Northumberland, NH | Northwood, NH | Nottingham, NH | Orange, NH | Orford, NH | Ossipee, NH | Pelham, NH | Pembroke, NH | Peterborough, NH | Piermont, NH | Pittsburg, NH | Pittsfield, NH | Plainfield, NH | Plaistow, NH | Plymouth, NH | Portsmouth, NH | Randolph, NH | Raymond, NH | Richmond, NH | Rindge, NH | Rochester, NH | Rollinsford, NH | Roxbury, NH | Rumney, NH | Rye, NH | Salem, NH | Salisbury, NH | Sanbornton, NH | Sandown, NH | Sandwich, NH | Seabrook, NH | Sharon, NH | Shelburne, NH | Somersworth, NH | South Hampton, NH | Springfield, NH | Stark, NH | Stewartstown, NH | Stoddard, NH | Strafford, NH | Stratford, NH | Stratham, NH | Sugar Hill, NH | Sullivan, NH | Sunapee, NH | Surry, NH | Sutton, NH | Swanzey, NH Tamworth, NH | Temple, NH | Thornton, NH | Tilton, NH | Troy, NH | Tuftonboro, NH | Unity, NH |Wakefield, NH | Walpole, NH | Warner, NH | Warren, NH | Washington, NH | Waterville Valley, NH | Weare, NH | Webster, NH | Wentworth, NH | Westmoreland, NH | Whitefield, NH | Wilmot, NH | Wilton, NH | Winchester, NH | Windham, NH | Windsor, NH | Wolfeboro, NH | Woodstock, NH Atkinson and Gilmanton Academy Grant, NH | Bean’s Grant, NH | Bean’s Purchase, NH | Cambridge, NH | Chandler’s Purchase, NH | Crawford’s Purchase, NH | Cutt’s Grant, NH | Dix’s Grant, NH | Erving’s Location, NH | Green’s Grant, NH | Hadley’s Purchase, NH | Hale’s Location, NH | Kilkenny, NH | Livermore, NH | Low and Burbank’s Grant, NH | Martin’s Location, NH | Millsfield, NH | Odell, NH | Pinkham’s Grant, NH | Sargent’s Purchase, NH | Second College Grant, NH | Success, NH | Thompson and Meserve’s Purchase, NH | Wentworth’s Location, NH

Merrimack County Process Server

Merrimack County Private Investigator

Hillsborough County Process Server

Hillsborough County Private Investigator

Cheshire County Process Server

Cheshire County Private Investigator

Strafford County Process Server

Strafford County Private Investigator

Coos County Process

Coos County Private Investigator

Grafton County Process Server

Grafton County Private Investigator

Rockingham County Process Server

Rockingham County Private Investigator

Belknap County Process Server

Belknap County Private Investigator

Sullivan County Process Server

Belknap County Private Investigator


Serve Papers CT Corp

Serve Papers

Serve Court Papers NH

Subpoena Server NH

Serve Subpoena NH

Serve Summons NH

Serve CT Corporations Systems

Serve LIS

Serve Lawyers Incorporating Service

Serve Concord, NH Registered Agent

New Hampshire Private Investigator

New Hampshrie Private Detective

New Hampshire Process Server

NH Process Server

NH Private Detective

Private Detective NH

NH Private Investigator

Private Investigator NH

Litigation Support NH


National Association of Professional Process Servers


Registered Agent Server NH

Merrimack County Sheriff

Hillsborough County Sheriff

Serve Papers NH

NH Constable

Constable in NH

NH Constable Services



nason logo

Concord, NH

 (603) 748-1660

Email: nasoninvestigations@gmail.com




nhli logo 

 Member, NH League of Investigators

Napps L

Member, National Association of Professional Process Servers


Member, Serve-Now