A Fringe cast seems awfully familiar to Peter this week.
At least 40% of the information Olivia knows is different than that the Olivia she is replacing knew to be true.
Olivia is off Fringe Division.
Walter doesn't know yet that Peter is "his" Peter.
The virus from an earlier case turning men into porcupine like creatures reemerges.
Lincoln is infected with the virus.
Lincoln is in charge of Fringe, but allows Olivia to work the case.
Broyles admitted Olivia back to the division.