In September 2007 a three-year-old girl was found abandoned at Melbourne's Southern Cross railway station.
Initially authorities were unable to verify her identity, so they gave her the nickname "Pumpkin" after the Pumpkin Patch branded clothing she was wearing.
But "Pumpkin" was actually Qian Xun Xue and her father Nai Yin Xue abandoned her after killing her mother back in New Zealand.
Simon Scott was the Detective Senior Sergeant in charge of the investigation that crossed three international borders.
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