On December 30, 2022, 39-year-old Stephanie Hansen was stabbed to death in her London home. Her housemate Sheldon Rodrigues initially appeared grief-stricken - but as this documentary reveals, behind his facade lay a chilling obsession. In the months before Stephanie's death, Rodrigues planted secret cameras and recording devices in their home and bombarded her with coercive WhatsApp messages. And when Stephanie began a new relationship, his jealousy and obsession turned deadly