About Us

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Certified as a WMBE by the City of Houston and as a HUB by the State of Texas, Kgriff Investigations offers a wide range of services including background checks, surveillance, employment screening and much more to business and private clients alike. 

Our continued commitment to excellence, value, and quality service has been and will continue to be the foundation on which our success is built.

We work with clients and investigators from coast to coast. Our home office is in Houston with branch offices all over the country.

Kathy Griffin grew up in Houston, Texas and attended the University of Texas in Austin. A great part of Kathy's formation came from her dad, a Houston Institution. 

Michael Griffin is the consummate Houston booster. Much of his notoriety came from his ownership and management of Griff’s Pub near downtown Houston for 56 years -- the oldest Irish sports pub in Houston. He held rallies and parties for Houston’s sports teams, athletes, and even politicos. 

He’s semi-retired now, but he can still be found working with the Kgriff team by serving civil process. As Griff likes to tell people, “Be nice to your kids, you never know when you’ll be working for THEM one day!”

Kathy spent a lot of time at that bar, growing up and hanging out with dad. Whether it was St. Pat’s Day or a big playoff game, Griff would end up hiring some HPD officers for security. Over time, Kathy got to know and admire half of the Houston Police Dept. When she graduated UT, a lot of those guys were retiring from city duty and many started working as private investigators. One of them took a chance on Kathy as an intern, and the rest is history.  

Founded in 1992, Kgriff Investigations opened its doors with two employees and two clients. Kathy started by conducting employment screening, civil processing, surveillance, and other investigative services. 

Over the years, Kathy assembled a team of the finest private investigators in the business. Through hard work and a focus on excellent customer service, she built Kgriff into one of the leading full-service investigation firms in the United States.

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Kathy's clientele encompasses several Fortune 500 Companies as well as several hospital groups in the world-renowned Texas Medical Center.  Kgriff also partners with national and international law firms, real estate companies, property managers, and private and public corporations. But day to day, our most important clients are the individuals and small businesses that count on us to protect their interests. 

Discretion and confidentiality are top priorities in all of our client relationships.

Kathy Griffin says women make great private investigators because most people expect men to do it. And because many clients and "targets" might confide more willingly in a woman.  This might be why "KGriff", the all-women investigative business she launched in Houston three decades ago has expanded into a nationwide agency.   But it may also be because of Kathy's dedication to helping and protecting victims, especially children.   In this episode, Kristi's long-term friend talks about some of the issues her team encounters, ranging from infidelity to elderly abuse to online scams, and how "Catfishing" is now one of the biggest concerns alongside the child custody cases she solves.  

01:24 - She's one of the top PI's in the country

02:35 - Kathy's Dad, Michael, owned Griff's Irish Pub in Houston 

04:10 - Female clients felt more comfortable with Kathy

06:10 - Surveillance at the St Regis

08:30 - How the internet has changed investigations 

10:15 - There are a lot of scammers out there

11:05 - Catfishing is rampant; the telltale signs

15:15 - "So you're a therapist, too" 

18:45 - The signs of infidelity 

24:02 - Retaliation from a spouse 

31:25 - The surgeon's IPad 

33:05 - The husband is cheating with a man 

33:25 - How do you break that to someone? 

35:20 - How to find Kathy and her investigation team  

37:02 - Rescuing a child and dealing with a family dispute  

41:25 - "Many of my clients are my best friends, still today"