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 the disinterred deceased is not Rita Bennett. Meanwhile, at the Sunny Day Continuing Care Facility, Catherine Willows and Warrick Brown must investigate the sudden demise of Vivian Elliot -- a patient whose death may be the result of unnatural causes....