With Jemma Mitchell under arrest, police have a circumstantial case against their chief suspect in the case of Deborah Chong’s murder. But when searches come up short, the lack of forensic evidence throws investigators’ working theory into question

On 27 June, 2021, holidaymakers stumble across headless human remains. Having identified the victim as 67-year-old Deborah Chong from North West London, investigators rush to learn how her body came to be so far from home.