Cat suspects Muirfield might know Vincent's whereabouts and in spite of her vow to go cold turkey, she is forced to interrupt his romantic cabin getaway with Alex in order to save their lives. Meanwhile, Evan finds a bug in his lab and becomes increasingly suspicious of J.T..
When Jake brings his -year-old girlfriend home for a visit, Alan is concerned Walden tries to hide something from Alan.
The guys host a taste test with uncomfortable survey questions afterward, negotiate for worthless items at a flea market and work as attendants at a gas station.
A preserved mass of human tissue a massive skull belonging to an African beast a replica of a meteorite that played a part in a heist.
Shane leads an expedition to a desolate island off the coast of Nova Scotia, where he believes the secret of the cure lies hidden. On the trek to the islands interior, Rebekah and Elena continue their bitter rivalry, Stefan does his best to keep the peace, and Damon accuses Shane of leading them into a trap. Bonnie and Jeremy try to figure out the message of the Hunters mark, while Shane reveals more of the legend of Silas and the witch Qetsiyah, along with his own personal history. Back in Mystic Falls, Tyler confronts Klaus, and Caroline is caught up in the violence that follows.
The end of summer is the busiest time of year for the Maine Warden Service, as the Wardens split their time patrolling the water and the woods. They're also on high-alert for criminals misusing the wilderness for illegal drug activity.
Competition heats up as several of the doctors fight to become the new face of Seattle Grace; April brings in an emergency case, and Jackson and Alex work with a transgender teen couple. Meanwhile, the hospital implements new policies which test the patience of the staff.
When Sherlock's ex-drug dealer, Rhys, comes around for help, Watson is concerned about Sherlock's sobriety after Rhys implies that Sherlock on drugs made a better detective.
Finch and Reese meet their match: a tech billionaire whose curiosity and endless resources could expose their identities and ruin their efforts to save his life.
The Sibunas find the real Miss Denby, who has some revelations for them but will they get away without being caught Jerome sets his sights on Willow. Joy boosts her confidence with a brand new look.
The Sibunas discover the man in the tank is Robert Frobisher Smythe what exactly are the adults plotting Eddie resolves to reveal Denby's true identity. Meanwhile, Jerome tries to win Mara back.
The Study Group returns from summer break ready to tackle their fourth year of Community College. Jeff is particularly focused on graduating and is just a few credits away. When there is a mix-up with a history class registration, Dean Pelton institutes an elaborate physical competition for class space. Meanwhile, Britta helps Abed deal with the anxiety he is experiencing over the thought of the study group graduating and breaking up.
The beginning of beautiful hatred between Archer and his new stepfather plays out as the two are chased by gangsters.
Ann tries to get to know herself as Leslie meddles in one of her biggest life decisions. Meanwhile, things go south when Ben enlists the guys to help choose a caterer for the wedding.
The staffers pair up as faux couples to score a Valentine's Day discount at a mall. Erin tells Pete that she'll break up with Andy when he returns, but Pete has his doubts. Jim and Pam socialize with the documentary's soundman.
A fight between Sheldon and Leonard impacts Amy and Penny's living arrangements while Howard is away, Raj helps Mrs. Wolowitz out.
With the resources of the firm stretched to the limit, Daniel Hardman returns with an outrageous lawsuit against Jessica.
Continuing their journey to the White Ruins, our heroes encounter a mysterious organization with a sinister plot!
Michael visits the Irish National Stud, discovers how harsh life was for the Irish poor and uncovers an astronomical feat of Victorian engineering.
A Noise From the Sky - The landing party's missing member returns, but celebrations are cut short when the group meets the other survivors and they have the violent encounter that they have been dreading. Meanwhile, a survivor from the lighthouse reveals his incredible ties to the Estrella Polar and the true origins of the man from Liverpool and Project Alexandria.