Castile, Spain, 1099.Cristina is just a frightened servant girl who works in the palace.Until, that is, she gets tangled up in a cunning plot. She will becrucial in the success of the great kinght El Cid's last battle and thesafety of the entire city against the attacking Berbers. She will haveto find new depths of courage to play her part.An unusual tale, based on a real medieval knight, this story is full of Terry Deary's dark humour and dry wit.