As a boy, 51-year-old Jon Howe was a school bully, tormenting one boy in particular - Simon Pierce. The shame of what he did has haunted Jon throughout his adult life, and he lives with the fear of the long-term damage he might have inflicted on Simon. Desperate to apologise, Jon's spent years looking for Simon but can't find a trace of him anywhere. Will Matt succeed where Jon has failed? And if he does, will Simon agree to meet Jon, let alone forgive him?46-year-old mother of three Lisa Whaymand's life changed forever when, out of the blue, she was diagnosed with an exceptionally aggressive form of leukaemia. Lisa's life hung in the balance for nearly a year. Her survival is down to the selfless act of an anonymous bone marrow donor. Four years after the transplant, she's still coming to terms with her ordeal. Now hoping to draw a line under the trauma, she needs to find and thank her donor in person. But with the identity of donors so carefully protected, what are the chances of Mel helping Lisa meet him face to face?