Our Team

Combined, our team has over 50 years of experience in income tax defense, financial investigations and litigation support.  Our experience, attention to detail and advanced technology allows us to provide you the support you need.  Please note: “THIS IS NOT A CPA FIRM” although Sage is associated with licensed CPAs.  Sage does not perform financial audits nor attestation of financial statements.


Edmond J. Martin
Principal, Chief Investigator
Certified Fraud Examiner (CFE), Texas Certified Investigator (TCI)


Ed Martin grew up in the New Orleans, Louisiana. In 1968 he earned his degree in accounting from Southeastern Louisiana College (now the University of Southeastern Louisiana). Following graduation, Ed spent a year with a New Orleans CPA firm and then applied for a position with the Intelligence Division of the IRS. He accepted the job and from August 1969 to February 1970 he trained in federal law enforcement in Washington, DC. After returning to New Orleans he became part of the DOJ Strike Force team that investigated District Attorney Jim Garrison and the New Orleans Police Department for public bribery by the local pinball industry.

In 1975, Martin and his family moved to Austin, Texas where his career continued. After reaching senior agent status he became lead agent in the investigation and prosecution of income tax evasion cases and of multiple fraud investigations.

Martin resigned from the US Treasury Department in 1984 and worked as a Supervising Examiner for the Texas State Securities Board in Austin. This experience allowed Martin to become adept in broader definitions of fraud: Ponzi schemes (John Colgin–1985), oil and gas fraud, and securities fraud.

In 1991, Martin returned to the IRS Criminal Investigation Division as a Special Agent to investigate fraud and money laundering cases. Some of the cases Martin handled during this period included: the employee leasing company Ralph Kirkley, Inc. (1996), the advanced fee scheme of William Fourie (1996-1998), the Ponzi schemes of Russell Erxleben (1998-1999), and Brian Stearns (1999-2000). Martin was also lead agent and instrumental in solving the 5-year-old mystery of what happened to Madalyn Murray O’Hair and her two adult children (1997-2000). After the trial of one of the criminals convicted in the O’Hair case, the Austin Chronicle stated: “If not for the methodical investigation of Special Agent Ed Martin and the FBI they (Gary Karr and David Waters) would have gotten away with murder.”

After nearly twenty-six years Martin retired. He was presented with an award for his “Dedication to the Cause of Law Enforcement” by the US Attorney’s Office in Austin and he was nominated for the FBI’s Director’s Award. In 2002, Martin received the Law Enforcement Circle of Excellence Award from the Central Texas 100 Club and in June 2002 received the “Service Above Self Award” for the Austin Rotary Clubs.

Martin has been interviewed on American Justice, American Chronicles, TruTV, A&E and Discovery for his investigation of the disappearance and murder of Madalyn Murray O’Hair and her children.

Since retiring in October 2001, Martin launched a Sage Investigations, LLC a Private Investigation firm where he investigate various cases including forensic accounting, income tax defense, litigation support, corporate investigations and anything related to following money, including fraud and embezzlement and Ponzi schemes. In 2002, Martin joined the Texas Association of Licensed Investigators (TALI), and later in 2006 TALI awarded Martin a Meritorious Service Award for Investigative Excellence. In 2007 Martin tested and received the Texas Certified Investigator (TCI) designation from TALI.

In 2006, Martin founded Cynic, Inc. and launched DIO, proprietary software for the investigation of complex fraud investigations, which takes advantage of data mining technology, document scanning, OCR capabilities, organizational services and reporting for the legal community.

Sage’s team of former IRS Criminal Investigators, Certified Public Accountants, and former FBI investigators, are solely committed to providing results that reflect the truth. Sage prepares a plan of action and proceeds to access the records that allow them to efficiently and effectively analyze financial matters in a variety of diverse cases. Their cases have ranged from $500,000 to millions of dollars in revenue. Their expertise has developed over 40 years in the area of fraudulent schemes (Ponzi schemes, vendor fraud, and sophisticated theft schemes), that once the money is traced, the extent of the scheme comes into focus. Sage Investigations provides fraud investigative services to six distinct markets: Tax Attorneys, Business and Corporate Attorneys, Estate and Probate Attorneys, CPAs, and individuals. Within those markets, Sage represents their clients in civil and criminal matters involving fraud, embezzlement, Ponzi schemes, and business disputes that involve following money trails and developing evidence to prove the client’s case on the plaintiff or defense mode.

Wealth & Finance International is fiercely passionate about recognizing outstanding achievement, game-changing innovation, and stellar performance. All of their awards are carefully tailored to provide detailed and in-depth analysis of the very best each market, industry, sector, and region has to offer. Wealth & Finance International takes choosing their winners very seriously with every single one selected purely on merit, meaning that, no matter how big an organization, and regardless of budget, there is no way someone can buy their way to success. Wealth & Finance International is dedicated to working around the clock to provide a platform to the brightest, best performing, and most deserving companies and individuals from across the funds and investment landscape. View article online or download PDF.

In August 2015 the Texas Association of Licensed Investigators awarded Edmond Martin, Founder of Sage Investigations, LLC the most distinguished, honourable and noble award that can be presented to a member of Texas Association of Licensed Investigators (TALI) by their peers. This award was established in remembrance of two outstanding deceased TALI members — Virginia Hudgins and David Sallee. The Hudgins-Sallee Award was established in their memory to exemplify the high moral and ethical standards by which a professional licensed private investigator adheres to in his/her services to the Texas Association of Licensed Investigators.

Edmond Martin has been seen in television programs such as City Confidential, Vanished, American Justice, A&E, BBC, the documentary Good Riddance, and Murder by the Book all concerning his investigation of the disappearance of Atheist Leader Madalyn Murray O'Hair and her family. He is also prominent in the books "UnGodly The Woman Who Ended School Prayer in America" by Ted Dracos and "America's Most Hated Woman" by Ann Seaman concerning Madalyn Murray O'Hair.

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Ken Huff
Director of Business Valuations


Ken Huff graduated from the University of Texas. He was a Special Agent for Internal Revenue Service Criminal Investigation for approximately nine years. He left the Internal Revenue Service to accept a position with the Texas Securities Board as a supervising investigator. He remained with the Texas Securities Board for approximately three years. After passing the CPA exam he went into private CPA practice in 1987. His primary area of practice is providing forensic accounting services in the areas of Divorce, Bankruptcy, Trust & Estate Litigation and general business litigation. He also provides business valuation services for litigation and taxes purposes. He is a licensed private investigator and Certified Public Accountant. In addition, he holds the following certifications from the American Institute of Certified Public Accountants: Accredited in Business Valuation and Certified in Financial Forensics.

Ken has been associated with Sage Investigations, LLC since 2010.

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Jason Slick
Financial Investigator, Technology Expert


Since graduating from Texas State with a degree in Mathematics, minor Computer Science, Jason has worked on many projects where he built his experience and knowledge of advanced computer techniques. Whether working as webmaster for companies like Cirrus Logic and Telescan Inc or User Interface Applications for NXTV and Automation Intelligence, Jason has always excelled at designing and coding complicated user interface systems that help people easily access data and digital content.  Working on a team or independently, he has shown the desire and ability to get projects done on time, on budget, and that function properly as designed.

Hired by Sage Investigations in 2005 to create our proprietary Fraud Examination software, Sage DIO, Jason has adapted himself to fit into the Forensic Accounting Investigation world.  As lead developer, he is instrumental in guaranteeing the integrity of our software products from design to deployment. Now also working as a Certified Fraud Examiner, his knowledge of computer systems, databases, data sets and financial evidence have quickly made him the go to expert for large complicated investigations.

He has been very influential in the techniques Sage use to accurately analyze, organize and report on financial investigations. Everything from multi-million dollar Ponzi schemes to complex business fraud, Jason helps us be the most accurate and organized firm working on financial investigations.


Joseph Stanfield
Director of IRS Civil Matters


Born and raised through high school in Weslaco, Texas; graduated from Weslaco High School in 1954. Served in U.S. Air Force from August, 1954 through May, 1958.

Graduated from Pan American College (Now U.T. Edinburg) with B.A. degree in accounting in May, 1961. Accepted a position with the Texas State Comptroller of Public Accounts in June, 1961. In October 1961, accepted a position as Fiscal Accountant with the U. S. Veterans Administration (Now Dept. of Veterans Affairs) in Amarillo, Texas. In June 1962, transferred to U.S. Army Audit Agency in San Antonio, Texas as internal auditor. In June 1966 accepted a position with the Internal Revenue Service in San Antonio. In 1971 transferred to Austin, Texas with the Internal Revenue Service as GS-12. Licensed to practice as a Certified Public Accountant in Texas in October, 1978.

Promoted to Internal Revenue Agent GS 13 in March, 1982. This position included examination of business tax returns, including individual, corporation, partnership, and trust returns plus details an acting group manager, On-Job-Trainer, Review staff, Taxpayer advocate specialist, and other duties as assigned. Joseph retired from Internal Revenue Service in July, 1998.

In January 1999, established an accounting practice, to prepare tax returns and represent clients in Collection, Examination, and Appeals Divisions of the Internal Revenue Service.

Joseph has been associated with Sage Investigations, LLC since January 2002.


Kenton Stephens
Director of Surveillance and Undercover


Kenton Stephens became a Licensed Private Investigator in the State of Texas in 2009. His experience includes surveillance, undercover operations, background checks and case research, including a familiarity with multi-jurisdictional state and federal records searches. He has also provided witness testimonies in multiple court trials.

Kenton received a B.S. in Criminal Justice in 1998, and he has a knack for undercover and surveillance work. His varied work history provides the experience needed to go unnoticed in a number of scenarios. His past jobs range from lifeguard to bar tender to legislative aide to enterprise computing sales to home building. He has logged over 950 hours of surveillance work.

He also has over 10 years experience in gathering and investigating corporate business structures, which taught him to be very resourceful. Give him a name and city, and he can find more information than you will ever find using Google. He presented a lecture to the Austin Chapter of Texas Association of Licensed Investigators (TALI) on Effective Use of the Internet to Jumpstart your Investigation.

In 2011, Kenton established a relationship with Sage Investigations, LLC.


Rodney Thomson
Supervisory Special Agent, FBI-Retired
Texas Licenced Investigator Economic Espionage, Business Intelligence, corporate risk analysis, complex operational Investigations & training


Rodney Thomson retired from the FBI in Austin, Texas after serving as the Senior Supervisory Resident Agent in Charge and 20+ years of service which included FBIHQ in Washington D.C., Los Angeles, Denver, and extended temporary duty assignments as the first Acting Legal Attaché in Seoul, Korea and an Acting Assistant Legal Attaché in Tokyo, Japan.  Thomson’s vast investigative, supervisory, and management experience encompassed the full range of counterintelligence, counter terrorism, criminal, espionage, and sensitive national risk analysis cases and responsibilities.  Thomson’s was honourably discharged from the USAF after nine years of service as decorated Special Agent and Counterespionage Case Officer in the Air Force Office of Special Investigations with experience serving in the U.S. and overseas.  In addition to prior service as a Senior Security Representative of the Northrop Advanced Systems Division responsible for subcontractor security on number of sensitive DOD contracts during his early career, Thomson was the founder and President of Thomko Consulting Services, Inc. for five years after his retirement.  In that role he provided consultation along with Human Intelligence and Surveillance related lectures and operational training on behalf of various DOD components and FBI sponsored courses at locations throughout the U.S. 

Mr. Thomson joined the Sage Investigations team in 2015.

Download Curriculum Vitae


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P.O. Box 160161 • Austin, TX 78716
Phone: 512-659-3179
Fax: 512-328-6878

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