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.
An FBI agent is recruited to help Quayle dig out sleeper agents at the OI, creating a Red Scare-like environment. Not good for anybody.
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.
The details of Clare's past on the Other Side emerge.
Ian and Howard get a bit closer in the Prime World. On the Other Side, Howard Prime finds a friend dead.
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.