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Tonight, alarming details in the lead up to 88-year-old Russell Allison's death in a suspicious house fire.

Join our "Cold Case" detectives as they reveal the last moments of pizza restaurant owner Jordan Voudouris' life and never seen before CCTV images in the hunt for his killer.

Joined by the police victim recovery dogs and the specialist search group, our team of highly experienced "Cold Case" detectives track the last known movements of homicide victim Bevan Wright and search a potential burial site.

Retired Detective Inspector Graham Bell joins our highly experienced "Cold Case" investigators as they review the sinister disappearance of Joe Chatfield, who vanished from Auckland over 30 years ago.

Detectives try to untangle a web of lies and misinformation to discover what happened to 34-year-old Timothy Pridding, who vanished without a trace from Dunedin in 1994.

Our detectives reveal chilling details of the brutal assault and deliberately lit fire that killed grandmother Roma Joseph, and the blood smears that may identify her killer.

After forty years, detectives uncover an opportunity to find the killer of 6-year-old Alicia O'Reilly, who was found raped and murdered in her own bed. WARNING: Deals with the issue of rape.

Season Finale: The head of the NZ Police's Missing Person's Unit helps review the mysterious disappearance of Richard Hinkley, who was last heard from on Christmas Day, 2015.