After Peter has a startling breakthrough in the Emma Wilson case, he turns to Golan to search out new clues. A furious Ambassador Ridell pressures Lynn to get Peter out of the country. In the New Mexican dessert, Debbie must make a dangerous trade with Tad Billingham if she wants to spare bloodshed. Rabbi Lev and a new partner work deep in the underground tunnels to carry out their mission.

An ancient religious sect completes all of the pieces to enact their deadly plans. Peter's attempt at preventing the impending catastrophe thrusts him into partnership with unlikely allies. Lynn realizes the depth of the conspiracy during her investigation into Ambassador Ridell, who is expecting a package from the States. Meanwhile, Golan tries to crack more clues from the Donaldson case. An emboldened Avram realizes what needs to be done and makes a move to protect his valuable asset.