Callie Lewis was just 24 years old when she took her own life. She had been in the care of the NHS, but fell through the cracks of an understaffed and overstretched system. For the last 16 months Panorama has been filming with her family as they try to understand what went wrong. Shortly before she died, they learned that Callie was a member of an online suicide forum, where she found detailed advice on how to kill herself. As reporter Ellie Flynn discovers, Callie’s death comes at a time when many people with mental health issues continue to complain about their struggle to connect with the services they need.