Louis L. Akin

Austin Private Investigator Louis L. Akin has more than 25 years’ experience performing investigations in the areas of criminal defense, personal injury, medicolegal death investigation, as well as performing electronic sweeps to detect telephone taps or room bugs. Louis is one of only two investigators in Texas who have twice been awarded a Meritorious Commendation for Investigative Excellence by the Texas Association of Licensed Investigators.

Lydia Clay-Jackson

Lydia Clay-Jackson, the 2012-2013 TCDLA President, has been a member since being licensed in 1985. Her primary office is in Conroe, but you may often see her in most East Texas courts. She was board certified in Criminal Law in 1996 and has tried everything from traffic tickets to capital murder.

Lydia McCoy

McCoy DNA Consulting was begun by Lydia McCoy to assist the community of law enforcement officials and area attorneys in better understanding forensic DNA. She got her BS in Biochemistry at St. Mary’s University in San Antonio, Texas, and her MS in Molecular Medicine at the University of Texas Health Science Center in San Antonio, Texas. She then went on to work for over four years at the Louisiana State Police Crime Laboratory in Baton Rouge, Louisiana. It was at the crime lab that she harnessed her years of schooling into a forensic application.

Major Christopher E. Martin

Major Christopher E. Martin has served as a military lawyer in the U.S. Army Judge Advocate General’s Corps for over 12 years. A graduate of UCLA School of Law and the Army’s LL.M program, Major Martin hails from California but claims Texas as his adopted home. He is a proud member of the Texas Criminal Defense Lawyers Association. Major Martin is a veteran of both the Afghanistan and Iraq wars, and has served in dozens of other overseas missions as an instructor, trainer, and legal advisor.

Mark Bennett

Mark Bennett is a board-certified Houston criminal-defense lawyer. He graduated from Rice in 1992 with a BA in Religious Studies and received his JD from the University of Houston Law Center. He blogs about the art and science of criminal defense trial lawyering at .

Mark G. Daniel

Mark G. Daniel practices in Fort Worth. He is past president of TCDLA and has chaired TCDLA’s Legislative Committee for five legislative sessions since 2004. Mark is board certified in criminal law by the Texas Board of Legal Specialization and the National Board of Trial Advocacy. He was selected as Percy Foreman Lawyer of the Year by TCDLA in 2009. He has been selected by Texas Monthly magazine as one of the top 100 lawyers in Texas (all categories) from 2007 to present.

Mark Griffith

Mark Griffith attended St. Edwards University in Austin, where as valedictorian he earned his BA in Latin American Studies. He received his JD from Baylor University. Founding President of the Ellis County Criminal Defense Lawyers Association, Mark has twice served in that capacity. He founded his Waxahachie law firm in 1993. Mark has attended Gerry Spence’s Trial Lawyers College in Wyoming three times.

Mark Ryan Thiessen

Mark Thiessen is a criminal trial lawyer and the Chairman/CEO of the Thiessen Law Firm in Houston, Texas. Mark earned the American Chemical Society-Chemistry and the Law (ACS-CHAL) Forensic Lawyer-Scientist designation, which is the highest form of scientific recognition available for lawyers. Mark is a frequent legal seminar lecturer, author of numerous published legal articles, and a LawLine and HBA faculty member.

Mark Stevens

Mark Stevens is a member of the Texas Criminal Defense Lawyers Association, the San Antonio Criminal Defense Lawyers Association, and the George Hanson Society, and has defended persons accused of crime since 1979. He can be reached at

Mary Alice Conroy

Mary Alice Conroy, PhD, ABPP, is Director of Training in the Forensic Doctoral Program at Sam Houston State University, as well as the past president of the American Academy of Forensic Psychology, and the most cited mental health practitioner in the past 40 years by the United States Supreme Court—either by name or in citing her work—as she was for many years the chief examiner in competency/sanity matters in the Federal Bureau of Prisons.