The Touch of a Shadow

Just as Esther and Mac are settling into their newlywed bliss, the FBI knocks on their door, sending them back to a devastating case they worked in 1959, when the killer threatened to murder Esther. The FBI flies a very pregnant Esther, and all the witnesses involved in the case to a safe house. But Mac returns to NYC to find the killer himself, and protect his beloved Esther from a killer with unlimited resources.