Joanna finds an unidentified man dead in a lift in a underground car park after a devastating flood, police assumes that he became trapped as the waters rose, but she is obsessed with discovering what happened to him.
Production companies：
Quay Street Productions
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Britbox
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Overview：Joanna finds an unidentified man dead in a lift in a underground car park after a devastating flood, police assumes that he became trapped as the waters rose, but she is obsessed with discovering what happened to him.
