We are raiding the Guardian Long Read archives to bring you some classic pieces from years past, with new introductions from the authors This week, from 2019: On 15 September 1981, 10-year-old Ursula Herrmann headed home by bike from her cousin\u2019s house. She never arrived. So began one of Germany\u2019s most notorious postwar criminal cases, which remains contentious to this day. By Xan Rice. Help support our independent journalism at theguardian.com/longreadpod