Polygraph Examinations


Great Plains Credibility Services    


All Star Investigations and Great Plains Credibility Services LLC

have teamed together to provide you with the most complete investigative services. 

Whether its private investigations, accident investigations, surveillance, polygraph examinations, or process service. 


Our investigators have a combined 85 years law enforcement and investigative experience. 

We are properly bonded and insured.


Please contact us for a free consultation.

(605) 610-7750

300 N. Dakota Ave.

Suite 220

Sioux Falls, SD 57104