Peter and Neal must assume each others’ identities to uncover a collusion scheme that is causing blackouts in New York.

Erica, now officially in charge of the global Fifth Column, leads them in a high risk attack against Anna. Anna meanwhile, growing closer in her plan to destroy humanity, finds a major obstacle in a certain Live Aboard candidate; and Ryan sneaks back onto the Mothership to try and rescue his daughter.

With time running out, Castle and Beckett must put aside their differences with Agent Fallon to avert a city-wide catastrophe.

In a follow up to last season’s “Peter” flashback episode, the all-new “Six Months Later” episode revisits a poignant period of time for both the Bishops and Olivia.

The CBI team is under suspicion when a museum antiques dealer is murdered. Evidence seems to suggest that one member of the team is responsible.

The CBI team is under suspicion when a museum antiques dealer is murdered. Evidence seems to suggest that one member of the team is responsible.

After Phil and Claire have a huge fight, Gloria steps in to counsel Phil while Jay counsels Claire. Jay has some regret in buying Gloria a karaoke machine. Cameron is in full prep mode for a huge fund-raising event and asks Mitchell and Luke for help.

A series of Fringe events leads the team to the home of a woman grieving over the death of her husband, while Peter and Olivia make an effort to repair the emotional rift between them.

When Pierce lands in the hospital, he believes he’s dying and gives the study group specific gifts that are actually meant to torment them. Britta wonders what to do with a blank check for « charity, » Jeff ponders the idea of meeting his father, and Troy gets to meet LeVar Burton, while Abed films the whole thing for a documentary.

Claire and Cameron are dismayed by the guest list for Lily’s princess-themed birthday party. Then DeDe attends with Claire’s old high school boyfriend in tow. Jay and Gloria turn to their own unique methods of dealing with this gathering of misfits.