Liberty Island
Olivia is still trapped in the parallel universe, under Walternate's (a doppelgänger of Walter Bishop) conditioning to believe she is her doppelgänger from Over There and part of its Fringe team. Throughout the episode, she willingly participates in Walternate's tests in a sensory-deprivation tank located on Liberty Island to stimulate her Cortexiphan abilities. One test is successful, as she temporarily finds herself in a gift shop on Liberty Island in the prime universe. Meanwhile, hallucinations of FBI consultant and colleague Peter continue to bother Olivia.