Hack

Missing four-year-old Cleo Smith has been found alive and well, after she went missing for 18 days in remote Western Australia. Hack explores why this case captured the country’s attention, and a former police detective sheds light on how these investigations work. Plus, doctors around the world have noticed a strange trend during the pandemic - teen girls suffering from uncontrollable jerking movements and verbal outbursts. They were baffled by what was causing it, until they realised their patients had a few things in common, including their use of TikTok. Live guests: Terry Goldsworthy, criminologist and former detective John Safran, writer and documentary maker Perminder Sachdev, professor of neuropsychiatry at the University of New South Wales