Castle and Beckett investigate the murder of an NYC subway worker found shot in Central Park. But, while investigating the murder they uncover the abduction of a young boy as well. The team must determine the motives behind the high stakes kidnapping in order to save the young boy’s life.

When the gang goes to a black tie event at the Natural History Museum, Ted gets introduced to Zoey’s husband, The Captain.

Cal puts his life on the line when he goes below to investigate an explosion that killed six coal miners. Gillian does a final favor for the FBI in exchange for getting both Cal and the Lightman Group out from under their thumb, once and for all.

After a classroom smackdown with a group of « mean girls » led by Meghan, Britta, Shirley, and Annie bond with Abed by turning him into the ultimate « mean girl. » Meanwhile, Jeff and Troy embrace a zen-like spirituality under the guidance of a groundskeeper when they come across a secret trampoline on campus. Determined to uncover the source of their new bliss, Pierce ends up taking a disastrous turn on the trampoline and lands in the hospital.

The alternate universe Fringe Division investigates a shocking breach of security when a twin frees his brother from a quarantined Amber area. As the team sets out to crack this sophisticated case, Walternate experiments over there more with Olivia as she reenters the tank. Meanwhile, visions of Peter continue to haunt Olivia about returning to the “other side”.