True crime fans will soon have another series to add to their watch list. Peacock has announced a new true crime limited series titled A Friend of the Family. The series is based on the true story of Jan Broberg. Jan was kidnapped multiple times over a period of years by family friend Robert Berchtold. The family was left unprepared for the tactics Berchtold used to exploit their vulnerabilities, drive them apart, and turn their daughter against them.