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All Star Investigations and Great Plains Credibility Services LLC

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

Whether its private 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


(605) 610-7750

Office Hours

**We are in and out of the office on cases, please call ahead to schedule time to meet***


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