Janet Muller, a 21-year-old German exchange student at Brighton University, went missing after becoming mentally unwell just before her final exams. After reporting to her family, the police received a report of a car set on fire with a young woman in the boot... was it Janet? Each episode of When Missing Turns to Murder features one case as it reveals powerful and emotional testimony from families and friends of those who have disappeared. Every story intimately shares the moment when a family changes forever – when a missing persons enquiry turns into a murder investigation. As each programme unfolds police and authorities investigate and bring the perpetrators to justice.