The following are highlights of The CW's May Sweeps episodes:
Thursday, April 25
THE VAMPIRE DIARIES (8:00-9:00 p.m.) "The Originals" Acting on a mysterious tip that a plot is brewing against him in New Orleans, Klaus (Joseph Morgan) returns to his past in the town he and his family helped build, and finds his former protégé, Marcel (guest star Charles Michael Davis), has taken control over both the human and supernatural population.
BEAUTY AND THE BEAST (9:00-10:00 p.m.) "Playing With Fire" Gabe (Sendhil Ramamurthy) comes clean to Cat (Kristin Kreuk) that he knows about Muirfield. Vincent (Jay Ryan) does not think Cat should trust Gabe and is suspicious of his intentions, which causes tension between them.
Friday, April 26
NIKITA (8:00-9:00 p.m.) "Self-Destruct" Shattered by Amanda's (Melinda Clarke) programming, her inability to save everyone, and her ultimate responsibility for the tragic events at Division, Alex (Lyndsy Fonseca) reverts to old ways and violently strikes out. With most of their compatriots dead, broken, or scattered to the wind, Nikita (Maggie Q) and Michael (Shane West) together must pick through the ashes of Division to see who and what can be salvaged.
Tuesday, April 30
HART OF DIXIE (8:00-9:00 p.m.) "I'm Moving On" Zoe's (Rachel Bilson) attempts at online dating hit a few snags until Rose (guest star McKaley Miller) and Max (guest star Nicholas Podany) take matters into their own hands and play matchmaker. Rob Huebell ("Children's Hospital") guest stars.
Wednesday, May 1
ARROW (8:00-9:00 p.m.) "The Undertaking" Finding it difficult to mend fences with Tommy (Colin Donnell) and Diggle (David Ramsey), Oliver (Stephen Amell) instead focuses on crossing another name off the list. Malcolm (guest star John Barrowman) reveals to Robert Queen (guest star Jamey Sheridan) and Frank Chen (guest star Chin Han) painful details surrounding his wife's murder, and how that shaped his plans for the Glades.
SUPERNATURAL (9:00-10:00 p.m.) "The Great Escapist" When Sam (Jared Padalecki) and Dean (Jensen Ackles) receive a distressing video message from Kevin Tran (guest star Osric Chau), they set about trying to uncover the Third Trial.
Thursday, May 2
THE VAMPIRE DIARIES (8:00-9:00 p.m.) "She's Come Undone" Damon (Ian Somerhalder) and Stefan (Paul Wesley) try a brutal new approach to provoke Elena (Nina Dobrev) into turning her humanity back on, and Caroline has a confusing and dangerous encounter with Klaus (Joseph Morgan),
BEAUTY AND THE BEAST (9:00-10:00 p.m.) "Anniversary" On the anniversary of her mother's death, Cat (Kristin Kreuk) asks Gabe (Sendhil Ramamurthy) to attend her family's annual remembrance of Vanessa, where Cat learns some information that makes her think her mom might still be alive. When a sniper shoots the mayor at a public event, Vincent (Jay Ryan) finds evidence that links Gabe to the sniper.
Friday, May 3
NIKITA (8:00-9:00 p.m.) "High-Value Target" Seized from the wreckage of Division, the black box falls into the hands of a mutinous agent guided by Amanda (Melinda Clarke). With help from arms dealer/reformed rogue Cyrus (guest star Isaiah Mustafa), Nikita, Michael (Shane West) and Alex (Lyndsy Fonseca) stage a daring op at the tightly-secured G-20 economic summit to regain control of the box and everyone's future.
Monday, May 6
90210 (9:00-10:00 p.m.) "Scandal Royale" Annie (Shenae Grimes) decides to get over Liam (Matt Lanter) by going to Paris for a book tour. Adrianna (Jessica Lowndes) performs after Fall Out Boy at a big event, but the concert ends in chaos.
Tuesday, May 7
HART OF DIXIE (8:00-9:00 p.m.) SEASON FINALE "On The Road Again" After having a rough time in BlueBell, Zoe (Rachel Bilson) decides a little time in New York City might be the perfect opportunity to give her some much needed perspective, but a medical emergency on the plane forces her to complete the trip with an unexpected companion. When Lemon (Jaime King) promises that the Rammer Jammer will be having a special concert with the band Gloriana, she must scramble to make it happen, with the less-than-enthusiastic help of Wade (Wilson Bethel).
Wednesday, May 8
ARROW (8:00-9:00 p.m.) "Darkness on the Edge of Town" With the Undertaking days away, Malcolm (guest star John Barrowman) dons his black hood to conclude business with seismologist Dr. Brion Markov (guest star Eric Floyd) and his team. Oliver (Stephen Amell) and Moira (Susanna Thompson) entertain a number of surprise - and mostly unwelcome - visitors.
SUPERNATURAL (9:00-10:00 p.m.) "Clip Show" Sam (Jared Padalecki) and Dean (Jensen Ackles) reunite with Castiel (Misha Collins). Digging through the Men of Letters' files, they stumble upon an undiscovered film which could be the key to the third trial. Metatron (guest star Curtis Armstrong) enlists Cass to mull over problems at home.
Thursday, May 9
THE VAMPIRE DIARIES (8:00-9:00 p.m.) "The Walking Dead" As Graduation Day approaches, Caroline (Candice Accola) tries to distract Elena (Elena Dobrev) by focusing on simple tasks like sending out announcements, but Elena won't be swayed from her new obsession. As a violent wind storm causes a power outage in Mystic Falls, ghosts suddenly appear - some with good intentions and some bent on revenge.
BEAUTY AND THE BEAST (9:00-10:00 p.m.) "Date Night" Cat (Kristin Kreuk) and Vincent (Jay Ryan) go on a date out in public in an attempt to be a normal couple, which backfires on them. Meanwhile, Gabe (Sendhil Ramamurthy) reveals some information that gives Cat hope they can find a cure for Vincent.
Friday, May 10
NIKITA (8:00-9:00 p.m.) "Invisible Hand" Before becoming engaged, Nikita (Maggie Q) said, "There's always gonna be another mission." Now, after barely surviving harrowing recent events, Michael (Shane West) questions his fiancée's commitment to a life beyond Division's web of deceit, double-crosses and murder - and he's not the only one with doubts.
Monday, May 13
90210 (8:00-10:00 p.m.) TWO-HOUR SERIES FINALE "We All Fall Down" PRINCE MICHAEL JACKSON GUEST STARS AND GOO GOO DOLLS PERFORM - The series finale begins with the stars and executive producers bidding farewell to the famous zip code in a look back at the show's many unforgettable moments. Then, in a memorable send-off, our favorite group from Beverly Hills will come together again after a traumatic event that makes them realize the importance of their relationships.
Wednesday, May 15
ARROW (8:00-9:00 p.m.) SEASON FINALE "Sacrifice" In the episode season finale, Oliver (Stephen Amell) and Diggle (David Ramsey) race to stop the Dark Archer (John Barrowman) from unleashing his vengeance on The Glades. After hearing of the danger in The Glades, Thea (Willa Holland) races to find Roy (Colton Haynes), inadvertently putting herself directly in the line of fire for Malcolm's (John Barrowman) devious plan.
SUPERNATURAL (9:00-10:00 p.m.) SEASON FINALE "Sacrifice" With Crowley (guest star Mark Sheppard) poised to undo all the good they've ever done as hunters, Sam (Jared Padalecki) and Dean (Jensen Ackles) find themselves cornered. But with Kevin's (guest star Osric Chau) help, the Winchester brothers bound into one last play against The Demon King.
Thursday, May 16
THE VAMPIRE DIARIES (8:00-9:00 p.m.) SEASON FINALE "Graduation" On Graduation Day, Mystic Falls is overrun with ghosts intent on settling old scores. Damon's (Ian Somerhalder) life is in danger after a ghostly encounter, while Matt (Zach Roerig) and Rebekah (Claire Holt) join forces to battle a ghost determined to find the cure. Finally, Stefan (Paul Wesley) discovers a horrifying clue to the mystery surrounding Silas.
BEAUTY AND THE BEAST (9:00-10:00 p.m.) SEASON FINALE "Never Turn Back" When secrets about Cat's (Kristin Kreuk) family are revealed, it will change everything Cat knew about her past. Vincent (Jay Ryan) finds himself staring his demise in the face; while Gabe (Sendhil Ramamurthy) takes drastic measures get some answers.
Friday, May 17
NIKITA (8:00-9:00 p.m.) SEASON FINALE "Til Death Do Us Part" Amanda (Melinda Clarke) puts her final plan into motion and forces Nikita (Maggie Q) into a life-threatening situation, where she has to choose between saving Michael (Shane West) or saving herself.