getting this photo of diana lovejoy? >> it definitely points us in a direction. re to be done. >> sergeant ernst's team search for more evidence in diana's home. >> we were able to locate the clothing that she was wearing when you purchase the phone. >> police had enough to arrest diana and bring her in for questioning. at first, she denied any involvement in the shooting. what is her alibi? >> that she was at home all night long, she never went out. >> and police realize she might be telling the truth about that, just because she bought the track phone, didn't mean she was at the crime scene. because diana was most likely not the person lying in the grass in camouflage, with a rifle? >> yes. >> did you ask her if she hired someone to kill greg? >> yes. no i did not. >> detectives pressure and diana told them something they didn't expect. >> she starts to describe her relationship with her shooting instructor. >> diana told police her instructors name, weldon mcdavid. >> he had volunteered to help her, protect herself from her ex husband. >> mcdavid weldon was the