Aled Jones is in London to investigate why the act of forgiveness is at the heart of the Christian faith. He visits Saint Ethelburga’s Centre for Reconciliation and Peace in Bishopsgate, which exists to transform conflict and division into new relationships and peaceful communities. He also hears the story of a father whose spiritual awakening occurred during the most tragic of circumstances, when his teenage daughter died from a sesame seed allergy on a holiday flight to France. Ahead of the 20th anniversary of 9/11, Pam Rhodes meets a Christian musician whose father was killed in the attack, to hear how his faith helped him through the aftermath.