In the first episode, the disappearance of 18-year-old Mona Blades.

Detectives track the last known movements of missing father and grandfather. Do Trieu, using the latest investigative techniques and cultural insight.

Detectives divulge never before released forensic information and use the latest DNA technology to hunt for the killer of 29-year-old Kayo Matsuzawa.

Detectives painstakingly review every aspect of the 2002 disappearance of Dunedin mother of three, Tuitania Barclay and come to the ultimate conclusion.

Detectives reveal secrets from the grave of Jane Furlong - the 17-year-old mother who went missing from Auckland and whose remains were discovered 19 years later.

Detectives use blowfly larvae, sea lice and tide charts to unravel the mystery surrounding the execution-style murder of 25-year-old David Robinson.

An FBI-trained criminal profiler and a behavioural psychologist help to identify the killer of 22-year-old Katrina Jefferies, whose body was found in an Auckland reserve in 2005.

For the first time, the Cold Case detectives investigate the 1984 Wellington Trades Hall bombing, and reveal compelling information about the killer device that took the life of Ernie Abbott.