6/6 Gillian risks her reputation and her life on a quest for her deepest obsession.
5/6 A British World War I tank containing the remains of six bodies is uncovered in France.
4/6 An Iraqi archaeologist from Gillian's past enlists the team's help.
3/6 The high-risk exploration of secret Celtic chambers unlocks an ancient love story.
2/6 The discovery of bones in the Bristol Channel reveals an extraordinary conspiracy.
1/6 The excavation of soldiers from the Crusades leads to a hunt for the True Cross.