Thirty years after the death of a suspected terrorist, the man's daughter receives an anonymous note claiming he was murdered. Clues lead the team to the Greenham Common antinuclear protests of the 1980s.

After an amateur sleuth is murdered, a photo of Danny is found at the scene. It turns out Danny was her friend, and he vows to find the killer. Clues lead to a 25-year-old murder and a trip to the countryside.