This is a hearing during a break in the Twin Peaks trial which ended in a mistrial. The prosecutors had met with a witness, learned that he had evidence favorable to the accused, and never disclosed it. People have gone to jail for less than that.
There's an old saying: "If you have the facts, pound the facts. If you don't have the facts, you pound the law. If you don't have the facts or the law, you pound the table." Watch what the dumbest DA's office in the State does.
Reyna is the DA. He is walking around because he is incompetent. The guy doing the talking is an ADA brought in from corrupt Williamson County. And I have some advice for the young, blonde ADA: Run.