New evidence points to a possible burial site for South Australia's Beaumont children, missing for 52 years. Specialist techniques will be applied to extract and sequence DNA if remains are found.
Blood-detection dogs work paw in hand with scientists and Australia's police to solve crimes and missing persons cases.
99% of people who disappear come home again. A third of them don't stay.
Some people have a remarkable aptitude for recognising a face – are you one of them?