The story alternates to the Fringe Team “over here” where they investigate a mystifying case that people are discovered in a trance-like state that ultimately leads to their death. The unlikely suspect: a mysterious box. As Peter and Walter collaborate to study its properties, alternate Olivia presses on and turns up the heat on an unsuspecting Peter. Meanwhile, key information about the future is revealed when Walter and Nina meet at Massive Dynamic for the emotional reading of the last will and testament of William Bell.

Gloria decides to honor her late grandmother by cooking more traditional Colombian meals; Claire finds out Alex is interested in a boy; Mitchell’s aversion to public displays of affection causes an argument.

Mike and Frankie must decide whether to attend Axl’s football game or Sue’s first cross-country meet; after raking the yard, Brick wants to set the leaves free in the forest.

Everett and the crew continue their efforts to save Destiny while holding off the Lucian Alliance invaders.

Beckett and Castle look for the killer of a famous psychic while debating whether extrasensory abilities are real or not. When a letter arrives from the victim predicting her death they must determine who actually wrote the letter – the victim or the killer.

After his encounter with Red John, Patrick rethinks his future with the CBI. At the same time, the team investigates two high-profile kidnappings.

After the extraordinary turn of events that shockingly left an imprisoned Olivia “over there,” she fights to find her way home. Meanwhile, Peter and Walter try to move on with their lives unknowingly alongside alternate Olivia.

Frankie comes up with a plan to stay on top of her kids’ schedules; Brick’s new teacher (Doris Roberts) accuses Frankie of being overprotective.

Beckett and her team burst into an apartment on a murderer’s trail, just to be surprised when they see Castle, who they haven’t heard or seen in months, standing over a dead woman’s body holding a gun. Beckett, has no other choice but to arrest Castle until he proves his innocence.

When Ted and Barney argue about who has “dibs” on a hot girl, Ted realizes that she is there with Cindy, a girl he previously dated who is also the roommate of his future wife. Meanwhile, Robin is heartbroken over Don, and Marshall can’t keep quiet about his desire to start a family.