(a) In all prosecutions for murder, the state or the defendant shall be permitted to offer testimony as to all relevant facts and circumstances surrounding the killing and the previous relationship existing between the accused and the deceased, together with all relevant facts and circumstances going to show the condition of the mind of the accused at the time of the offense.
(b) In a prosecution for murder, if a defendant raises as a defense a justification provided by § 9.31, 9.32, or 9.33, Penal Code, the defendant, in order to establish the defendant’s reasonable belief that use of force or deadly force was immediately necessary, shall be permitted to offer:

Terms Used In Texas Code of Criminal Procedure 38.36

  • Defendant: In a civil suit, the person complained against; in a criminal case, the person accused of the crime.
  • Evidence: Information presented in testimony or in documents that is used to persuade the fact finder (judge or jury) to decide the case for one side or the other.
  • Testimony: Evidence presented orally by witnesses during trials or before grand juries.

(1) relevant evidence that the defendant had been the victim of acts of family violence committed by the deceased, as family violence is defined by § 71.004, Family Code; and
(2) relevant expert testimony regarding the condition of the mind of the defendant at the time of the offense, including those relevant facts and circumstances relating to family violence that are the basis of the expert’s opinion.