War wounds... It has been three years since the James children disappeared without a trace. When Sarah is inexplicably found alive on the south coast, CIA Agent Catherine Truman is asked to travel back to the UK. In doing so, Catherine has to come face to face not only with the enigma Sarah poses, but also her own tangled past and innermost demons - demons that have driven her for most of her life. Sarah doesn't know why she's survived, but it soon...