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Find a Process Server

Allegiance Investigators

(605) 338-3078
Allegiance Investigators


Mention ServeNow to receive: Our Mission is to provide quality and timely service in a professional manner while maintaining the highest ethical standards.

Our team of process servers and investigators proudly assist businesses, attorneys, insurance companies, and individuals with their specific needs.

Whether it’s serving a hard to find individual, covert surveillance, or uncovering facts that you need, you can call Allegiance Investigators to get the job done.


  • Process Services
  • GPS Tracking
  • Surveillance
  • Infidelity Investigations
  • Background Checks
  • Information Checks
  • Locate Missing Persons
  • Locate Witnesses

Service Guarantee

Confidential services.

Areas of Coverage

  • Sioux Falls
  • Yankton
  • Watertown
  • Madison
  • Aberdeen
  • Rapid City
  • Pierre
  • Minnehaha County
  • Affiliates in: Nebraska and Iowa


  • ServeNow

Member Info

Pat McManus
(605) 338-3078
Phone 2:
(605) 310-0943
PO Box 87930
Sioux Falls, SD, 57109

The Lawgical Promise The Lawgical Promise guarantees this member has been pre-screened to verify their qualifications.

Service Guarantee
Special Offer

Office Location

PO Box 87930
Sioux Falls, SD
(605) 338-3078