Fringe - Season 4 Episode 1 -

Peter creates a bridge between the two universes to force both sides to work together in resolving the problems in both universes and then he vanishes and is forgotten as if he had never existed. Meanwhile Agent Lincoln Lee and his partner Robert chase a criminal. Lincoln kills the criminal but a second one with a translucent skin kills Robert. Olivia assumes the case but Lincoln notes her plate and follows her. Soon they team-up to chase the mysterious criminal that is killed by Olivia. Walter finds a device in the man and Olivia gives to her alternate version that ...