The terrorists behind the Grand Central Station bombing reveal themselves. In other events, at Quantico, the recruits are given time off for the holidays, but not everyone is in a merry mood when secrets are spilled.moreless
Dr. Susan Langdon, former agent and profiler, assigns the NATs to look at serial killer cases to find the one victim that doesn't fit the case. Simon puts his life in danger when he becomes too good at the task. A highly experienced FBI team interrogates Alex while Ryan's life in on the line.moreless
As the team prepares to evacuate the island, they learn that the Navy has already decided to make sure no one leaves the island by implementing a deadly Plan B. Alan's only hope is to find the cure. Meanwhile, Peter and Anne start to making plans for their future together.moreless
As Kyle gets worse, Soren takes the team to the Bleeding Tree. At the Abbey, Peter learns about Michael's breeding program, and Julia offers a new idea how to grant Amy immortality in exchange for Mother.moreless
Julia arrives at the Island along with Sergio where they meet Peter at the Abbey. Meanwhile, Alan, Kyle and Lt. Winger go into the woods searching for what may be a cure for the pathogen.moreless
While investigating murders involving an avenging ghost, Sam and Dean discover that Garth has taken on Bobby's role as hunter coordinator.
Genevieve struggles to give Madeline a proper Valentine's Day present.
Madeline helps Pepito to join the society of young magicians.