Magdalena Cruz did not know who her father was. But she knew he was a rapist. An ancestry DNA test led her to her likely family. When she looked at their profiles on social media she came across the photograph of a man with a striking family resemblance.
Journalist Amber Haque and criminal psychologist Dr Julia Shaw delve into the story.
Producers: Ciaran Tracey and James Shield
Executive Producer: Innes Bowen
Production Coordinator: Juliette Harvey
Mix Engineer: John Scott
Commissioning Editor: Dylan Haskins
Assistant Commissioners: Izzy Lee-Poulton and Sarah Green