Annie and Shirley try to bring Leonard down. Troy and Abed re-enact a scene from a body switching film.

Sherlock and Joan hunt for the accomplice of a murdered blackmailer who targeted families of rape victims. Meanwhile, Sherlock resists celebrating his first year of sobriety.

When the power goes out at McKinley High, Will and Finn enlist the members of New Directions to "unplug" and perform acoustic numbers. Meanwhile, Isabelle Wright asks Kurt to volunteer at the Vogue.com charity event, with Rachel and Santana in tow.

Bailey finds herself at the center of a CDC investigation surrounding the death of several of her patients, as Jackson and the rest of the board members argue over how to address the crisis with the public. Meanwhile, Cristina teases Alex about his unspoken feelings for Jo, and Owen continues to take special care of Ethan as the condition of his parents remains uncertain.

Will Graham and the BAU team track a serial killer whose bloody ritual includes cutting the victims' back flesh and stretching it to look like angel wings. Returning to the field weighs heavily on Will's psyche and Hannibal tries to drive a wedge between Will and Jack. Meanwhile, Jack Crawford's wife Bella pulls away from him and begins seeing Hannibal as her therapist, in an effort to come to terms with the fact she is dying. Beverly tries to connect with Will on a more personal level.

From "The Big Bang Theory", actor Jim Parsons; musical guest Snoop Lion; a Top Ten List presented by Barry Sanders, the cover athlete of the Madden 25 video game.

Leslie deems Ron's budget-cut proposals unacceptable. Andy and Ben celebrate a big donation made to their charity. Ann tries to solve Tom's girlfriend troubles.

When a person of interest is poisoned, Finch and Reese only have 24 hours to identify the toxin and find the person responsible; Detective Fusco's past catches up to him.

While Olivia engages in an emotion-filled conversation with Fitz, her team works to help one of their own. Cyrus becomes skeptic towards his husband and Mellie is near to bringing the white house down.

Amy tries to help Sheldon get over his compulsive need for closure when one of his favorite TV shows is canceled; Raj discovers a secret about Lucy.

Stephen starts an "O" Book Club, Matt Cartwright speaks Spanish, Fox & Friends gets the word out about a guy singing like a canary, and Gene Robinson advocates gay rights.

From "At Any Price", actor Zac Efron; author Anna Quindlen.

Mindy helps Morgan out by giving him kissing tips. http://youtu.be/9bv0fEGQWHs

Dwight and Angela participate in a paper airplane contest and compete against each other. Meanwhile, Andy prepares for a potential acting job, and Jim and Pam utilize new skills.

Acting on a mysterious tip that a plot is brewing against him in New Orleans, Klaus makes a trip to the town he and his family helped build. Klaus’ questions lead him to a reunion with his former protégé, Marcel, a charismatic vampire who has total control over the human and supernatural inhabitants of New Orleans. Determined to help his brother find redemption, Elijah follows Klaus and soon learns that Hayley has also come to the French Quarter searching for clues to her family history, and has fallen into the hands of a powerful witch named Sophie. Meanwhile, in Mystic Falls, Damon and Stefan continue with their plan for Elena, while Katherine reveals a surprising vulnerability to Rebekah and asks her to deliver a message.