The year is 1211. A young woman is brutally slain in Marseille - the first in a series of killings which will terrorise the city and create a difficult challenge for the new castellan of the castle, Sir Orvin de Villeneuve.Unrelated to these events master carpenter and building designer Gervase Pitt, his wife and apprentice son are sent to the French city at the behest of Father Alain, Master of the Knights Templar in England. Their ostensible role...