In most homicide cases, the first issue for the investigator is determination of the killer's identity. In domestic violence cases, however, the killer is usually readily identifiable. Once evidence of identity is established either through defendant admissions or irrefutable evidence, the defense usually shifts to the limiting of the defendant's culpability, i.e, voluntary manslaughter, provocation, or diminished capacity (under the influence of drugs or alcohol). The challenge in every domestic homicide case is to prove the defendant's conduct was murder rather than manslaughter. Investigative techniques should include immediate interviews with children in the family, other relatives, witnesses, and the defendant. Immediate, recorded interviews are particularly important with family members, because often witnesses related to the defendant will recant their incriminating statements. A thorough investigation of any previous incidents of violence involving the defendant and the victim should be conducted to establish motive and intent.