but why kianna's life was taken? so much harder to comprehend. be able to accept it. it-- it's hard. it's hard. keith morrison: criminal trials are one way the grieving find answers. and with a confession on tape, the trial of steven gordon looked like a formality. or so the prosecutor might have hoped. and then the judge made that ruling. oh, boy. andrea canning: a suspected serial killer turns the case against him upside down. coming up. it's the piece that brings everything together. and that was gone. andrea canning: when "dateline" continues. with dupixent, stay ahead of moderate-to-severe eczema. as you welcome the feeling of touch with clearer skin and less itch. the #1 prescribed biologic by dermatologists and allergists, helps heal your skin from within. severe allergic reactions can occur. get help right away for face, mouth, tongue or throat swelling, wheezing or trouble breathing. tell your doctor of new or worsening eye problems, like eye pain, vision changes, or blurred vision, joint aches and pain, or a parasitic infection. don't c