The chief yeoman warder oversees the tower's celebration of the end of the First World War, and special preparations are made for the tower director's retirement party, involving a military band and a unique farewell as he leaves the tower for the last time. Newly hatched raven George is introduced to the rest of the birds, not all of whom take kindly to newcomers, and historian Tracy Borman unearths the story of Roger Casement, who was executed for treason for supporting Irish independence during the First World War