London, 1944/45- Kate Henderson is an energetic and spirited young woman. As a trained paramedic and ambulance driver she does her work courageously and with determination, even though underneath she is still wrestling with grief after witnessing the shooting death of her diplomat father seven years earlier. Her father's murder was never properly investigated and it remains unsolved. Kate's life is interrupted once more when she wakes up one night to the sound of the air raid alarm and the terror whistles of a bomb's stabilizers screaming toward the roof of her house. Kate survives, but she is injured.