When Flight 189 crashes into the Severn Estuary, it leaves a raft of unanswered questions. How could ten-year old Amy Patterson have survived apparently unharmed, only to die of hypothermia? Who was the man found alongside her, a yachtsman who had obviously not been on the plane? How could such a high-tech plane literally drop from the skies? Why were certain passengers switched to this flight at the last moment?

Coroner Jenny Cooper is drawn into the investigation, despite the fact that a d...