worth homicide detective thomas bocher went to the university of texas in austin to see marie robards. >> she came out in the hallway and i introduced myself. i told her she was under arrest for the death of her father, steven robards, years earlier. she had no response. there was no reaction. >> and marie quietly went with them, poised as ever. and once they got in that little room, they barely had to ask a question and she confessed and broke down. >> and she was pretty forthcoming with information fairly quickly. she didn't try to hide. she apparently was either guilt-ridden or had thought a lot about what she had done and came forward with the information. >> the most fascinating aspect for both the police and for journalists covering the case was marie's explanation of her motive. >> what was it that made you want to kill your father? and she said, i wanted to be with my mom. >> but in an ironic twist, like something out of a shakespearean tragedy, it was all in vain because marie robards's mother and her new husband were planning to move to florida and didn't tell her until afte