Archer's former fiancée calls on him to rescue her cyborg boyfriend from outer space, but he has other things on his mind.

On Halloween, Pierce accidentally locks himself in his panic room, forcing the gang to search through his house to find the code that unlocks the door.

Sherlock investigates what he believes will be an open-and-shut case after Detective Bell is attacked. However, the case takes an unexpected turn when the suspected assailant is found dead. Meanwhile, Sherlock encourages Joan to learn self-defense.

Will and Emma get ready for their Valentine's Day wedding with the help of past and present New Directions members.

As the hospital spirals closer to financial ruin, Owen must make some tough decisions, which includes foregoing an expensive surgery that could save the life of a child. Meanwhile, Alex and Jo work together to save the life of an infant, and April asks Jackson for dating advice.

Comic Jerry Seinfeld; musician Dave Grohl; musical guests Dave Grohl & the Sound City Players with Stevie Nicks.

Leslie and Ben organize a black tie gala to raise money for their park. Andy prepares to take his Police Academy Exam. Ron fills in for Leslie on Pawnee Today.

As Reese and Finch try to save a hotel maid's life, they encounter a litany of suspects; Detective Carter considers a significant offer from the FBI.

After discovering the truth behind defiance, Fitz is still struggling to figure out whom he can actually trust. Meanwhile Olivia is trying to move on with her life, and she meets a handsome stranger, Jake Weston, who sparks her interest. But when she and Fitz are forced to be in the same room again, real sparks fly and things get heated. Back at Pope & Associates, the team handles a new case, and for the first time they're working with David Rosen instead of against him.

Dana “Scottie” Scott returns to complicate Harvey and Jessica's battle against Hardman. But this time, she's brought the full force of her British firm.

The guys search for a perfect Valentine's Day gift for their significant others; Stuart and Raj host a "lonely people" party at the comic book store.

A fertility feast leads to Valentine's Day, the Obama administration targets S&P, and "Citizenville" author Gavin Newsom brings government into the digital age.

Comic George Lopez; from "Bunheads", actress Sutton Foster.

Pam interviews for a job in Philadelphia, but her potential manager reminds her of her former boss, Michael Scott. Dwight acquires the help of Angela in order to give his elderly Aunt Shirley a bath. Meanwhile, Andy attempts to make Pete and Erin feel uncomfortable.

On the island, Damon has an ugly run-in with a Hunter named Vaughn, and realizes he is one of The Five. Stefan confesses his true feelings about the possibility of becoming human again to Elena. When a stunning new piece of information about the cure is suddenly revealed, it changes the stakes for everyone. Jeremy helps Bonnie recognize what is real and what is an illusion, and Shane is comforted by a woman from his past, Caitlin. Back in Mystic Falls, Caroline and Tyler find that their attempt to translate the code on the Hunter’s Sword is futile without help from Klaus, who has his own reasons for solving the puzzle.