A cargo ship carrying illegal Chinese immigrants is raided by I.N.S. On board they find a mysterious woman chained inside some quarters. Later, Jordan sees the woman in hospital and seems adamant that Catherine should help her... because she will save Frank's life. But the women is now the prime suspect in a number of deaths aboard a ship.

Catherine a Lara team up to investigate when five girls claim they saw a vision of the Virgin Mary. Catherine also begins to gain a deeper understanding of Frank's work with the Millennium Group.