Insight investigation services. LLC is a chicago. Illinois based licensed. Insured private detective agency owned and actively managed by a former illinois deputy inspector general with 35+ years experience conducting investigations - 10 of them supervising and conducting government investigations. OUR experience includes thousands of investigations and more than 35.000 interviews. Agency owner and chief investigator gilbert R. Jimenez is a certified inspector general and ATTORNEY. CALL insight - when YOU really need to know!.