For four years I sat on the other side of this. As Chief of the Criminal Trial Division and then Chief of the Major Crimes Division at the Bexar County District Attorney’s Office, I supervised the prosecutors who tried this county’s homicide cases. I reviewed the files, sat in on the charging decisions, and watched how a case went from a detective’s first phone call to a jury verdict. Before that I spent thirty years defending people accused of the same crimes, and I have gone back to defending them since. If you want to know more about my background on both sides of the courtroom, read About Mario Del Prado.
So when a family calls me the week after an arrest and asks “what are they doing right now?”, I can tell them. That is the point of this post. If you or someone you love has been arrested for murder in San Antonio, the most useful thing I can give you in the first few minutes is a clear picture of what the State is building, because every piece of it is a place the defense has to be working too. If you are dealing with a fresh arrest right now, review our practical guide on What to Do in the First 24 Hours After an Arrest in San Antonio.
The charge itself
Texas defines murder in three ways in Penal Code § 19.02(b): intentionally or knowingly causing a death; intending serious bodily injury and committing an act clearly dangerous to human life that causes a death; or causing a death during the commission of another felony. Murder is a first-degree felony, which under § 12.32 means five to ninety-nine years or life. You can learn more about how we defend against these allegations on our Murder & Homicide practice page.It becomes capital murder under § 19.03 when an aggravating fact is present — a murder during a robbery, burglary, kidnapping, or sexual assault; the murder of a child under ten; a peace officer; more than one victim; and so on. If you are facing an escalated charge, read our deep-dive guide: Capital murder defense in Texas: what families need to know in the first 48 hours.
The charging decision matters more than most families realize. The difference between “murder” and “capital murder” on the indictment is the difference between a parole-eligible sentence and life without parole, and that decision is made by a handful of people in the DA’s office in the first days or weeks. The defense has a voice in it if the defense is present and prepared. That is the first reason to have a lawyer before the grand jury meets, not after. In fact, intervening early and attacking the State’s weak points can derail their case entirely, just as we did in our recent Capital Murder Dismissal (June 2026) case result.
What the State’s file actually looks like
Every murder case I ever supervised was built from the same components. The strength of the case depended on how many of them the State had and how well they fit together.
The scene. Crime-scene investigators document what was there, where it was, and in what condition. Photographs, measurements, casings, blood, the position of the body. What the scene shows — and what it should show but doesn’t — is the skeleton of the case.
The medical examiner. The autopsy establishes cause and manner of death, and the trajectory, range, and sequence of any wounds. A good defense lawyer reads the autopsy report the way the State’s own experts do, and often retains a forensic pathologist to read it too. The ME’s findings are frequently the single most important fact in a self-defense case, because they tell you whether the physical evidence matches the State’s story, the accused’s story, or neither.
Witnesses. In Bexar County, homicide detectives move fast in the first 48 hours. They are taking recorded statements from everyone they can find, and those statements lock people in. What a witness said on the night of the event — before they’d talked to anyone else, before they’d read a news story — is often very different from what they say six months later. The defense has a right to those statements under Article 39.14 of the Code of Criminal Procedure, and comparing them is where cross-examination is born.
The accused’s own words. More murder cases are made by the defendant’s statement than by any other single piece of evidence. Detectives are trained to get one. They are permitted to be less than honest with a suspect to get it. If there is one thing I want a family to take from this post, it is this: the person who has been arrested should not talk to anyone about the facts — not the detective, not a cellmate, not a girlfriend on a recorded jail phone — until a lawyer is in the room.
Phones and digital evidence. Location data, text messages, call logs, social media, Ring cameras, the car’s own computer. Detectives get warrants for all of it, and it takes months to come back. It cuts both ways: I have seen phone records convict a man, and I have seen them prove he was somewhere else.
Ballistics, DNA, and the lab. Bexar County’s forensic evidence goes through [the Bexar County Criminal Investigation Laboratory — Mario to confirm], and some of it through DPS. Results are slow. A case may be indicted long before the lab work is finished, which means an early plea offer is often made on an incomplete picture.
Where the case gets weak
Prosecutors know where their cases break. I did. Here is what I looked for when a file landed on my desk, and it is what I look for now from the defense side.
Whether the physical evidence matches the story. If the only eyewitness says the accused was standing over the deceased and the ME says the fatal wound came from ten feet away, the State has a problem, and a prepared defense lawyer will make sure the jury understands it.
Who talked first, and what they were promised. In a case with more than one participant, somebody usually cooperates. Article 38.14 of the Code of Criminal Procedure says a conviction cannot rest on an accomplice’s testimony alone; there has to be other evidence tending to connect the accused to the offense. Juries are entitled to know what the cooperating witness got for his testimony.
Whether the State can prove intent. Murder requires an intentional or knowing killing, or intent to cause serious bodily injury. Manslaughter under § 19.04 requires only recklessness and is a second-degree felony. A great deal of homicide litigation is fought on the ground between those two words.
Self-defense. Texas law on justification is broad, and once the defense raises it with some evidence, the State has to disprove it beyond a reasonable doubt. Whether the defense can raise it depends on evidence that has to be gathered early — the deceased’s history, the accused’s injuries photographed before they heal, witnesses who saw the moments before.
What the defense should be doing in the first thirty days
Getting the bond addressed. Getting an investigator to the scene and to the witnesses before memories harden. Sending preservation letters for surveillance video that businesses overwrite in days. Reviewing the magistration paperwork and the probable-cause affidavit for what the State thought it had on day one. Deciding whether to make a presentation to the grand jury. And making absolutely sure the client is not building the State’s case for it from a jail phone.
I take a limited number of homicide cases at a time so that I can do those things myself. If your family is facing this, call me at 210-663-3750. I answer my own phone.
Frequently asked questions
Can a person be charged with murder in Texas without a body or a weapon?
Yes. The State must prove beyond a reasonable doubt that the accused caused a death, but it can do so with circumstantial evidence. Cases without a recovered weapon are common. Cases without a body are rare but have been prosecuted.
What is the difference between murder and capital murder?
Murder under Penal Code § 19.02 is a first-degree felony carrying five to ninety-nine years or life. Capital murder under § 19.03 requires an additional aggravating fact — for example, a killing in the course of a robbery or of a child under ten — and carries life without parole or, if the State seeks it, death.
How long does a murder case take in Bexar County?
Most take well over a year from arrest to resolution, and serious contested cases often take longer. Lab results, expert review, and the court’s docket all drive the timeline.
Should the accused talk to the detective to “clear things up”?
No. Not without a lawyer present. A statement given without counsel is the most common way a defensible case becomes an indefensible one.
Can the charge be reduced before trial?
Sometimes. The charging decision is made by the DA’s office, and it can be influenced by what the defense presents before indictment and afterward. Whether that is possible in a given case depends on the evidence, which is why the defense investigation cannot wait.
