We Accept All Major Credit Cards

Tell Us About Your Case

In The News

Houston Criminal Defense Attorney Casey Keirnan
Surveillance Video at the Center of Trial on Triple Slaying at Houston Car Dealership
Houston Chronicle - April 3, 2017

On Monday, his attorneys will argue that he is not the man on the damning video. "I intend to prove otherwise," said attorney Casey Keirnan. "He is innocent. This case is very circumstantial and my client has always maintained his innocence."


Houston Criminal Defense Attorney Casey Keirnan
Video Showing Johnny Manziel Partying Surfaces
abc13.com, KTRK-TV March 1, 2016

The big question a lot of folks have is whether authorities are treating this case differently because Manziel is a famous football player. [Casey] Keirnan says that's very possible, and it may not be a bad thing.


Jury Finds Houston Man Not Guilty In Fatal Drug Sting
Houston Chronicle February 19, 2014

A Houston man charged in a deadly shootout with federal agents after a botched drug sting was found not guilty of capital murder late Wednesday. Alfredo Gomez, 21, was facing life in prison had he been convicted.


Missing Evidence Drops Charges in Houston Drug Killing
Houston Chronicle September 28, 2010

Prosecutors in midtrial Tuesday dropped capital murder charges against two men after it was discovered that investigating Houston police officers did not give prosecutors or defense lawyers evidence in the case, attorneys for the accused said.

Defense lawyers Bob Loper and Casey Keirnan had audio, not video, of what their clients told police.

Harris County Judge Rules Death Penalty Unconstitutional 
abc13.com, KTRK-TV March 5, 2010​

Harris County's district attorney is livid after a local judge's ruling Thursday. He said the death penalty is unconstitutional​  


"Today, Kevin Fine has stood up and said the death penalty statute is broken and doesn't work anymore," said Casey Keirnan, Green's Attorney.Even though it's the law in Texas, the judge declared the death penalty unconstitutional. It was a victory for those against capital punishment.

Retrials Offer Some a Path Off Death Row​Houston Chronical March 25, 2012


One of the most notorious defendants to be retried was 68-year-old Buntion, who gunned down Houston police officer James Irby in 1990. 


Casey Keirnan, one of Buntion's lawyers, said it was not fair that one death row prisoner can get a life sentence while others, including his client, wait for their death warrant to be signed.

Officer's Murder Trial Begins With Emotion​

​ABC-13.com, KTRK-TV May 18, 2010


Defense attorneys say they plan to emphasize that no matter how tragic the death of Officer Canales is, neither defendant pulled the trigger and the man who killed Officer Canales is dead.


"He never once anticipated this was going to happen," defense attorney Casey Keirnan said. "As a matter of fact, he didn't shoot Officer Canales."


Texas Judge To Hold Hearing on Death Penalty Law 
USA Today December 5, 2010​

HOUSTON (AP) — In the deeply Republican state that has executed more convicts than any other and the county that has sent the most to death row, an unusual legal proceeding will begin this week: A Democratic judge will hold a lengthy hearing on the constitutionality of the death penalty in Texas.

"We don't say a state doesn't have the right to have a death penalty," attorney Casey Keirnan said. "We're saying the way we do it in Texas under our statute is unconstitutional."


"Lawyer of the Year"

Harris County Criminal Lawyers Association (2014)

Free Case Evaluation

Request a phone call directly from Mr. Keirnan and Mr. Mercer to talk about your case.

Mercer & Keirnan

Houston Criminal Defense Attorneys

917 Franklin St #550

Houston, Texas 77002




Open 24/7


Follow Us

  • Instagram Social Icon
  • LinkedIn Social Icon
  • Wix Facebook page
  • Wix Twitter page
  • Wix Google+ page

 In addition to Harris County, we also serve:

  • Harris County

  • Fort Bend County

  • Montgomery County

  • Galveston County

  • Brazoria County

Why Hire Mercer & Keirnan

  • Over 38 Years of Criminal Defense Experience in Houston

  • 2014 Lawyer of the Year (Harris County Criminal Lawyers Association)

  • Recognized In the News nationwide as a renowned criminal defense attorney

  • We give our personal phone numbers to our clients so they can reach us easily any time

  • Avvo.com 2017 "Client's Choice"

  • Avvo.com rating of "Excellent"




  • Officer's Murder Trial Begins with Emotion, ABC7 News Chicago - Mar. 18, 2010

Disclaimer: The information contained on this site is not intended as legal advice and is solely meant for general informational purposes. Any and all interaction with this site in no way creates an attorney-client relationship unless and until an agreement is actually reached.

Copyright 2020 Mercer & Keirnan. All Rights Reserved.