One of Kianna Underwood's "All That" castmates tried to muster help for the down-and-out former Nickelodeon child star years before a hit-and-run driver killed her in Brooklyn -- as sources revealed Monday that police found the car behind the horrific crash.

Kianna Underwood left behind a short but unforgettable list of screen roles that many of us grew up watching. Kianna Underwood’s passing at 33 reminds us of her early impact on screen.