Hope Part 1

S23, E7: Teenagers messing around in a stolen car collide with a concrete pillar in a multistorey car park. The joyriders escape, but within the smashed concrete, the unmistakable form of a skull is revealed. After painstakingly extracting the skeleton encased inside, Nikki and the Lyell team must investigate a suspicious death dating back 20 years. Meanwhile, Clarissa faces a difficult decision regarding her mother's care.