Dave Hertog provided excellent service in a timely and discreet manner. We needed information quickly but it was important that the work was done without causing any disturbances. Dave was able to flawlessly obtain what we needed with quick and accurate service and real attention to detail. I highly recommend him.

I just want to express my extreme gratitude to you and your firm for the professional manner in which you handled my case. The information you were able to ascertain and provide to me and my family was invaluable. The best part is, the situation is has now  resolved itself with your assistance.

Thanks again for the great work.

This can not begin to cover the true value of what you have to offer the world, but it’s a good start. Thank you so much. All the best!!

Barrington resident and lawyer Edward Scott has known Dave Hertog about eleven years and said his business relationship with Dave is one of his most trusted.  “I trust him as a professional and as a person,” “Dave’s work is thorough, prompt and accurate. He’s quick and if there’s bad news, he’s not afraid to sit down and tell you the truth.”

Dave Hertog is an amazing PI; in 24 hours he had a lead for me on how to find my vehicle for me, since it was stolen. Neither CPD nor my vehicle theft detective could help me, but Dave did. I highly recommend Dave, his skills, knowledge and personality are second to none.

Last fall (2015) I stood at the Daley Center computers trying to find an important witness. After running through all my usual sources I was near the end of my rope – he wasn’t dead, he wasn’t on the street, he wasn’t in the Cook County Jail, the Department of Corrections or in federal custody. I moaned out loud that the guy had dropped off the face of the earth. Lucky for me, Dave Hertog was at the next computer. Five minutes later, using only his smart phone, he’d found my guy in the Knox County Jail.

This note is to thank you for your excellent work on a number of projects over the last few years.

In one case in particular you saved our corporation potentially from millions in loses by doing a thorough background investigation of a potential business partner.

I look forward to using your services for other projects in the future.

I have engaged Dave Hertog over the past twelve years in a variety of security-related assignments. His consulting work for my companies has included investigations, executive and employee protection, building security and workplace violence issues.

Most recently, he performed consulting services for us in our Miami Office. This involved investigative and employee protection services related to a serious workplace violence issue.

I have always found Dave to be highly professional, responsive and ethical. I would strongly recommend him to any person or business in need of such services.

Dave’s attitude, education, experience, know how and personality made him a match for our protective operation. He is a sharp, intelligent young man. Dave has a strong work ethic and high energy level. He is discreet and keeps himself in excellent physical condition.

My assessment is that Dave is highly motivated and ethical in whatever he does, and I give him a strong endorsement and recommendation.

I would be remiss if I did not write to commend you again for your extremely prompt and professional response to our requirements for security services in connection with Special Meeting of Stockholders. It was very much a pleasure to work with you, even on such short notice.

You’ve been supporting our security operations for several years now and not only do I appreciate the responsiveness, quality of work, and professionalism you and your staff have demonstrated, but my internal clients have actually taken time to call me to praise your work. As I’ve probably told you before, if my internal clients are pleased, then I’m very happy.

I confirm that I have known, and worked with Dave Hertog for over the past 12 years.

Over that time, I have exclusively utilized Dave’s’ services for all of our employee background checks and our random drug testing program. I’ve also relied on his expertise in the area of workplace theft, security and “conflict of interest” cases.

At all times, I have found him to be a reputable, trustworthy and professional. . His responses have always been prompt, informative and thorough, and he always has kept our company’s best interest in mind.

I would highly recommend Dave for any of your background/investigative needs.

Dave – A thousand thanks for helping locate Mr. X. His whereabouts would still be a mystery to me but for your help. All the best!

It’s comforting to know that on short notice you are able to track down witnesses, serve subpoenas, and gather information needed to help prepare for trial.

Dave & his colleagues have conducted all business in a highly efficient manner. They have always been most helpful in providing background information accurately & expediently, allowing us to make sound hiring decisions.

Dave I can’t even express my gratitude, but I will start by saying. Through the years, I found your services to be top notch, your abilities to be second to none, and your friendship, guidance and confidence to be no less than perfection. I look forward to working with you again in the future, and I thank you for all that you have done to improve all the situations we have had. Here’s to your continued success!