Businessman Paul Nguyen left Sydney’s Hilton Hotel in May 2014 and was never seen alive again.

A police investigation uncovered secrets that exposed Mr Nguyen’s murky underworld connections, leading authorities to a makeshift grave around an hour’s drive, south of Sydney.

The excavation and identification of Mr Nguyen’s remains was forensic anthropologist, Dr Hayley Green’s, first case. In this episode, hear about the complexities of collecting, analysing and documenting human bones in a murder investigation.

If you or anyone you know needs help:

• Lifeline (Crisis support and suicide prevention) 13 11 14
• Full Stop Australia (National violence and abuse trauma counselling and recovery Service) 1800 385 578

See omnystudio.com/listener for privacy information.