Our Firm is experienced in helping individuals and businesses build financial crimes cases in anticipation of civil litigation or criminal prosecution.  Individuals have employed our Firm for assistance with preparing cases of financial crime against former employees and business associates for trial or presentation to law enforcement.  Companies have sought our counsel and advice for handling matters such as embezzlement and theft of trade secrets.  We understand the evidence it takes to build these types of cases, how to obtain it, and what the government looks for when making its decision of whether to prosecute a case.  In addition to helping individuals and businesses build their cases, David A. Nachtigall and his Houston internal investigations law firm are able to facilitate the presentation of cases to the appropriate authorities if desired.

How Can Our Firm Help?

Our Firm helps develop cases of financial crime and fraud for potential presentation to law enforcement and for civil litigation purposes.  Common scenarios in which our Firm may be involved include current or former employees suspected of stealing money or trade secrets, or business associates who have engaged in fraud or unfair dealing.

In some cases, whether a crime has been committed is not readily apparent.  A thorough investigation by a qualified Houston internal investigations law firm can help make this determination.  Moreover, in instances of fraud, there is often a fine line between a whether a civil suit or seeking criminal charges is more appropriate.  David A. Nachtigall has the experience and expertise of both the procedures to conduct internal investigations and construct cases, and knowledge of the applicable law in order to determine the available remedies.

In cases in which a criminal charge is the client’s objective, law enforcement may lack the resources to properly investigate financial crime.  White collar investigations are generally time and resource intensive, and some agencies do not have the manpower and expertise to properly investigate financial crimes.  As a former white collar prosecutor, David also has extensive experience with law enforcement agents and prosecutors, and understand the types of evidence the government expects to see when considering a prosecution.  When presenting a claim of alleged financial crime to law enforcement, it is advantageous to be able to provide the appropriate forms of evidence and information to law enforcement in order to increase the likelihood that an official investigation will be conducted.

In cases where involving law enforcement is not appropriate, civil remedies may exist in order to redress allegations of fraud.  In addition to criminal allegations, David A. Nachtigall and his and his Houston internal investigations law firm handle white collar and fraud cases in civil courts.

Our Firm’s Qualifications

As a former white collar crimes prosecutor, David worked with state and federal agencies and private citizens to build dozens of cases against individuals and companies from simple embezzlement to multimillion dollar Ponzi schemes.  David has built many complex cases from the ground up, and understands what it takes to construct, and deconstruct, cases of financial wrongdoing.  David has experience in areas including:

  • Embezzlement and aggregate theft
  • Mortgage fraud
  • Insurance fraud
  • Misapplication of fiduciary property
  • Healthcare fraud
  • Securing the execution of a document by deception
  • Securities fraud

David A. Nachtigall, Attorney at Law, PLLC is a Houston internal investigations law firm with knowledge of the documentary and other evidence typically collected in internal investigations and extensive experience working with forensic accountants and technology eh3xperts in the evaluation of allegations of white collar crime and related misconduct.

Houston Internal Investigations Law Firm

If you or your business has been victimized by an employee, business associate, or company, and are seeking civil or criminal remedies, contact Houston white collar attorney David Nachtigall to discuss potential options.


“David went above and beyond to help me in defense of a DWI charge. With his background as a prosecutor, he already knew the ins and outs of navigating through the process and was able to get me a better deal than I otherwise would have received. His hard work, open communication, dedication and intelligence are all very valuable for anyone in an unfortunate situation like I was. I couldn’t be more pleased with his representation and would definitely recommend him to anyone considering hiring an attorney.”
charged with Misdemeanor
“David was the first and only person I considered calling for legal advice for a friend in an unusual and complicated situation. His advice was spot-on accurate and the best solution. David is not only one of the smartest lawyers I know but he also has a unique grasp of the nuances involved in working with different personalities and negotiating on behalf of them. He can quickly synthesize various outcomes and options into a well-defined solution. He does it all with integrity, clarity and confidence that I’d want representing myself or a loved one.”
B.S., client under Felony Investigation
“Mr. Nachtigall is an exemplary attorney. Overall, he was always responsive to the various amount of questions I had, also he kept me informed on how things were looking during my case. I have spoken to plenty of attorneys, but Mr. Nachtigall seemed to stand out for his sincerity, his willing to make your case his responsibility and maintaining a positive attitude that seem to be hard to find nowadays.”
A.R., client charged with Felony
“Within my industry I consult with many lawyers and whilst on a business trip to Houston I required legal counsel and David was recommended to me. Initially David’s age surprised me; as it did not reflect his wealth of experience, local contacts and immediate control that he took of my case and me. David promptly providing sound, logical and concise legal counsel which demonstrating a comprehensive understanding of the local system and the law. David has great integrity and a supreme confidence born from experience. A quiet man but with a firm, resolute character that enabled a professional court demeanour that when coupled with his succinct legal strategy provided for a most successful conclusion in court – Thank you David. I vouch for and strongly recommend David services, he is great lawyer.”
J.G., client charged with Misdemeanor
“David Nachtigall was my attorney for a DWI that I received in December of 2013. He really did a great job on my case. He was always very polite, prompt, and diligent when dealing with any questions that I had and he always took the correct steps to accomplish our desired outcome. Even though my case was stacked against me, he still was able to negotiate a DWI Pre-trial Intervention plea (which was the best and most realistic outcome considering the circumstances). Just to make things clear, the deal I received is not one that is easily ascertained. In fact, it took two tries to receive it. However, thanks to Mr. Nachtigall’s hard work and persistence, the deal went through. He never kept me in the dark about anything in reference to my case, he was not difficult to contact, and he always returned my phone calls as soon as possible or as soon as he had an answer to any question I asked (all of which are increasingly rare qualities in a busy lawyer). I can’t thank him enough for his help, and I would recommend David Nachtigall to anyone in need of a great, hard-working lawyer who knows how to get things done efficiently and effectively.”
J.C., client charged with Misdemeanor
“I was recently charged with assault on a peace officer which is a felon charge. I have never been in trouble with the law in my life. I was raised in a strict catholic house I was at the wrong place at the wrong time. I hired David after dealing with a bad lawyer. He picked up the slack with no problem. David did everything in his power to get the charges dropped. I left with a misdemeanor charge and 6 months probation. David answered ALL of my phone calls & emails. He showed up to every court setting and didn’t send anyone for him. I would highly recommend David to anyone.”
J.U., client charged with Felony
“David Nachtigall is a true professional. He handled my case (a second degree felony) with such expertise that the charges were dropped. His experience as a former prosecutor proved to be a tremendous asset. He kept me well informed and provided much needed personal support. I highly recommend David for any legal need you may have.”
P.S., client charged with Felony
“I highly recommend criminal defense attorney David Nachtigall. While he represented my son, David consistently displayed a calm and professional demeanor, careful attention to detail, and thoroughly researched every aspect of a very complex and challenging criminal case. His ability to deduct the truth was commendable despite the complainants who kept changing their story. I am thankful we had David on our side. His previous experience working in the DA’s office was an advantage in understanding how the courts worked. I especially appreciated his compassion to stay in touch with us and that he was easily reachable when we had questions. If you need an attorney that will truly listen and fight for you, I recommend David Nachtigall.”
P.T., parent of child charged with Felony
“David is a consummate professional. Through a normal background check I found out I had a very old warrant, I attempted to call the county and they would’t even talk to me. It could have cost me my job. I contacted David (one of the challenges is I live 500 miles away); and he secured a dismissal the next day, saving my career. He cut right through the red tape. I’d highly recommend David to anyone!”
R.B., charged with Misdemeanor
David is one of the most polished, even tempered attorneys I’ve ever met. I was the defendant on a spurious criminal case and he carefully dissected each unsubstantiated allegation and was able to refute the basis for the charge itself (which was the intent to commit a crime). I have to say that he really made the prosecuting attorney look foolish by carefully researching and laying out the facts combined with his patient, even tempered demeanor. I also appreciated the fact that he knew the behind the scenes political motivations for why the prosecution in the D.A.’s office acted so illogically-he knows these people and their work environment, so he was able to use this to craft a winning strategy to get my case dropped.
J.B., charged with Felony
“I was recently traveling on business in Houston and was caught with a tiny amount marijuana. All it takes in Texas is half a joint and you are in a world of hurt. Dumb mistake on my part. Let me be the first to advise everyone in a similar situation, you will need strong representation. The Houston court system is beyond challenging and unbelievably confusing. What I thought was no big deal could’ve meant losing my license, probation, and possibly more jail time. Typically people hate attorneys, David saved me in a huge way. He treated me like a friend and always kept me posted on the status of my case. He was willing to work with me due to my work schedule and he came to his office, before it even opened, to meet me. Because of his experience and persistence my case was dropped. I am so thankful I found him and would highly recommend his service. Trust me, you will not be disappointed.”
J.W., client charged with Misdemeanor

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