PEREZ HILTON INTERVIEWS SUPERSTAR KATY PERRY - Katy Perry invites Perez to take an exclusive peak behind the scenes of her video for single “The One That Got Away.” He then joins the pop star on her UK tour and is treated to exclusive access to her closed set. The pair also gets up close and personal discussing topics including her former husband Russell Brand, her early Christian music career and her love of touring.

IT'S MY PARTY - On the morning of Elena's 18th birthday, Caroline is busy planning a party, but Elena is focused on searching for any clues that might help her discover where Stefan is. Damon is also searching for Stefan, while trying to protect Elena and keep her from doing anything that would draw Klaus' attention. Meanwhile, Klaus and Stefan are busy trailing a werewolf named Ray Sutton (guest star David Gallagher, "Super 8"). Now working at the Mystic Grill along with Matt , Jeremy is struggling to understand why he keeps seeing the ghosts of Vicki (guest star Kayla Ewell) and Anna (guest star Malese Jow) since he was brought back to life by Bonnie's magic. Meanwhile, Alaric does his best to watch over Elena and Jeremy, while dealing with his grief over Jenna's death. Finally, Caroline and Tyler face a new and unexpected challenge. John Behring directed the episode written by Kevin Williamson & Julie Plec.

IT'S NIKITA VS PERCY IN THIS EXPLOSIVE SEASON FINALE — Nikita and Michael invade Division in an attempt to capture Percy. Alex and Sean get caught in a deadly gunfire battle with the U.S. Marines and Ryan must convince the President of the United States not to destroy Division until he is sure Nikita and Michael are safely out of the building, but the President is eager to end Percy's reign. Meanwhile, Birkhoff asks Sonya (guest star Lyndie Greenwood) for help, and Nikita corners Percy in his office, but he pulls out one final trick that may cost her the battle. Eagle Egillson directed the episode written by Carlos Coto.

SAM AND DEAN STORM SUCROCORP TO TAKE DOWN DICK ROMAN — Dean and Sam prepare for battle with Dick Roman (guest star James Patrick Stuart). Dick's in the final phase of his plan and the Winchesters must team up with Castiel (guest star Misha Collins), Bobby (guest star Jim Beaver), Meg (guest star Rachel Miner) and Kevin (guest star Osric Chau), the prophet, to stop him. However, Dick is one of the smartest enemies they've ever faced so it's a mind game to see who can keep the upper hand. Robert Singer directed the episode written by Sera Gamble.

As Haley (Bethany Joy Galeotti) prepares to emcee the annual Tree Hill Burning Boat Festival, Brooke (Sophia Bush) uses the opportunity to process her father's betrayal, while Julian (Austin Nichols) tries to breathe new life into a past idea. Mouth (Lee Norris) and Millie (Lisa Goldstein) make a change to their morning show, and Clay (Robert Buckley) and Quinn (Shantel VanSanten) get ready for Logan's (guest star Pierce Gagnon) first night at the beach house.