Xavier Davis is charged after a Houston couple and their 6-year-old daughter were fatally shot point blank in the head. A young witness, then aged 10 and having been shot in the arm called her grandmother for help. She heard her father tell their assailant he had nothing more to give him. Davis, 32, was arrested the next day as the suspected triggerman - purportedly hired by a childhood friend to kill the family. He is charged with capital murder in the deaths of Donyavia Lagway, 29, and Gregory Carhee, 35, and their daughter, Harmony, 6. Alexus Williams was also arrested in connection with the family’s death with prosecutors accusing her of hiring Davis for an unspecified amount. Authorities believe she had a prior relationship with Lagway and may have lived at the couple's apartment for some time. Prosecutors say that she may have watched the killings or seen the aftermath on a video chat with Davis at the apartment.