'My mother killed my father, but I fought for nine years to get her freed'

David Challen fought to free his mother, Sally Challen, from prison after she killed his father due to decades of coercive control. Sally's conviction was quashed in 2019, highlighting the importance of recognizing psychological manipulation as a form of domestic abuse. David now campaigns against domestic abuse, sharing his family's story in his book, "The Unthinkable," to raise awareness and protect victims of coercive control.