Rebecca Bennett, the estranged stepdaughter of a well-to-do Las Vegas businessman, is hounding the Las Vegas Police Department to reopen the investigation into her mother Rita's death -- alleging that, despite appearances to the contrary, Rebecca's greedy stepfather actually played a hand in Rita Bennett's untimely end. But no one is prepared for the news that CSIs Gil Grissom, Sara Sidle, and Nick Stokes report -- their investigation is inconclusive...because...