The team tries to track down their rogue member, and discover the artifact they have is unexpectedly powerful. Meanwhile, Claudia wonders about her future with the Warehouse team and Pete must choose between Kelly and the mission.
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.
When Mrs. Frederic is stricken ill, the agents must search for a cure before it’s too late. Their quest takes them to Egypt and the long-lost Warehouse 2.
After Cal’s journalist friend, Julie, is murdered over an investigative piece she was writing on political corruption in Baltimore, Cal decides his team should continue her work and finish the story.
Dr. Grant attempts to return to 1947 but when Carter intrudes, they both wind up stuck in the past under the threat of altering present-day Eureka once again.
When Peter and Neal find a vital clue in the mystery of who killed Kate, Neal orchestrates an elaborate con to bring himself face to face with her murderer.
Pete and Myka use H.G. Wells’s time machine to travel back to 1961.
Tommy and Sheila do their best to adjust to life after Damian’s accident. Sheila copes with her grief, Tommy struggles to budget his time, and the guys find themselves with a new pickup ploy.
Neal and Peter must go undercover into the world of corporate espionage after a tech company’s head researcher is murdered.