Peter and Altivia's baby is going to muddy up the waters quite a bit.
Cockroaches guest star on this creepy episode of Fringe.
Peter and Olivia struggle to rekindle the romance briefly started in last Season's finale
Yet another CortexiKid appears out of the woodworks.
More on Peter's weaponisation and Walter's attempts to save his son
The machine and Peter meet for the first time, with terrible consequences.
Fringe returns with Walter trying to recuperate his mental acuity and the Observers trying to set things straight.
Olivia is back home, but things are not quite what they used to be.
Olivia tries again to make her way back home.
Has Olivia regained control of her memories?