When a squadron of RAF Hurricanes shoots down an unidentified
aircraft over Turelhampton, the village is immediately evacuated.
But why is the village still guarded by troops in 2001? When a
television documentary crew break through the cordon looking for a
story, they find they've recorded more than they'd bargained for.
Caught up in both a deadly conspiracy and a historical mystery,
retired Brigadier Lethbridge-Stewart calls upon his old friend the
Doctor. Half-glimpsed demons watch from the shadows as the Doctor
and the Brigadier travel back in time to discover the last, and
deadliest, secret of the Second World War.