Echo is laid siege upon, as is the Office of Interchange once again.
So many doubles. The plot thickens.
Howard arrives at Echo, where he meets the warden and other interesting people.
The doors at the Crossing open again briefly, and a deal must be made.
Howard and Howard Prime are pitted against one another from forces on either side of the Crossing
Clare manages to contact Baldwin. Howard discovers the truth of his wife's accident. Howard Prime goes on the run.
Howard and Howard Prime must secretly meet to exchange information. But their talk does not go as planned.
Aldrich visits an old friend from the Other Side. Both Howards must adjust to their parallel lives, but the real Howard discovers secrets.
Howard goes to the Other Side, where he discovers Emily is alive and well, and they have a daughter.
Howard and Aldrich try to get answers from Baldwin. Emily goes to the Other Side with Ian.
Howard Silk works for the United Nations. In a single day, everything he knows about where he works, and the world, is turned upside down.