Testimonials: Business/Corporate Investigations
“The quality of your performance is extraordinary. Your timeliness and efficiency is particularly pleasing. I would be happy to provide a reference for you at anytime.”

– Gary T Potter, Esq.


“If you need surveillance done in Colorado, Robert and Andrea are as good as it gets. Not only are they excellent at conducting surveillance, they are extremely professional and dedicated to their clients. Everything they do is above board and ethical…They are simply the best at what they do, and they are the most honest, ethical people I know. I would recommend them to anyone who needs high-quality work done.”

– Jennifer Brown, J.D., CLI


“I was referred to Advanced Professional Investigations (API) by a fellow CALI Member. I could not be any more pleased with the results of their investigation. The assignment involved a multitude of tasks and they were able to accomplish all of them quickly, professionally and efficiently. I will definitely be calling on this agency in the future. I give API my highest of recommendations. ”

– Marsha Edick

Call us today 720-933-9301

220 S. Wilcox St, #654, Castle Rock CO 80104
3800 Buchtel Blvd., #100383, Denver, CO 80210