Thursday, Oct. 3, is a huge night for vampire lovers. Not only does the CW’s hit series “The Vampire Diaries” return tonight, but its spinoff series, “The Originals,” is also having a special premiere screening! So, set that DVR because we’re breaking down all the TV shows – old and new – that are premiering tonight.

The night starts off at 8 p.m. with the highly anticipated season five premiere of “The Vampire Diaries” on the CW. But for those looking for something a little lighthearted (and bloody), look no further than CBS and NBC. The two networks are debuting brand-new comedies at 8:30 p.m. Get your Will Arnett fix with CBS’ “The Millers,” or laugh with Mike O’Malley in NBC’s “Welcome To The Family.”

At 9 p.m. viewers can choose between supernatural drama on the CW’s “The Originals” (“Vampire Diaries” fans definitely won’t want to miss this one) or the return of TV favorite Sean Hayes in his new NBC sitcom, “Sean Saves The World.”

You won’t want to miss ABC’s “Scandal” at 10 p.m. to find out exactly how Olivia Pope and Fitz can recover from the major fallout of season two.

Check out episode descriptions for Thursday’s lineup below and let us know what you’ll be tuning in to watch:

“The Vampire Diaries” (8 p.m. on the CW)

Vampire Diaries
"The Vampire Diaries" airs on the CW at 8 p.m. CW

“The Vampire Diaries” returns for its fifth season with “I Know What You Did Last Summer.” The episode will find Elena and Damon enjoying their steamy romance before Elena heads off to her freshman year at Whitmore College.

As for the rest of the crew?

- Jeremy is adjusting from being dead to being alive.

- Bonnie is trying to maintain her secret that she’s dead.

- Matt and Rebekah are back from their European adventure … with a “mysterious beauty named Nadia.”

- “Stefan” is acting a little strange.

- Silas returns just in time to make a “terrifying appearance” at the Mystic Falls “End of Summer” party.

“The Millers” (8:30 p.m. on CBS)

The Millers
"The Millers" airs on CBS at 8:30 p.m. CBS

Nathan (Will Arnett) and Debbie (Jayma Mays) find out that their parents, who have been married for 43 years, are getting divorced. The kicker? Their mom, Carol (Margo Martindale), is moving in with Nathan and their father, Tom (Beau Bridges), is moving in with Debbie.

“Welcome To The Family” (8:30 on NBC)

Welcome To The Family
"Welcome To The Family" airs on NBC at 8:30 p.m. NBC

Dan (Mike O’Malley) and Caroline (Mary McCormack) are excited to have the house to themselves as their daughter Molly (Ella Rae Peck) prepares to leave for college. Their world gets turned upside down, though, when Molly announces that she’s pregnant with her secret boyfriend, Junior (Joseph Haro). Hilarity ensues when Dan and Caroline meet Junior’s parents, Miguel (Ricardo A. Chavira) and Lisette (Justina Machado) … who have a different outlook on their new situation.

“The Originals” (9 p.m. on the CW)

The Originals
"The Originals" airs at 9 p.m. on the CW. CW

“The Vampire Diaries” spinoff, “The Originals,” gets a special premiere date on Thursday, Oct. 3, at 9 p.m. before switching over to its permanent time slot on Tuesdays at 8 p.m.

In the pilot episode, “Always and Forever,” Klaus Mikaelson heads to New Orleans, the city his family helped build 300 years ago, to find out who is plotting against him. His brother, Elijah, follows him to town and discovers that Klaus’ onetime hookup, Hayley, has fallen into the hands of powerful witches.

With Klaus’ evil former protégé, Marcel, up to something fishy, and a secret brewing around Hayley, the brothers decide to stay in New Orleans and reclaim everything that was once theirs.

“Sean Saves The World” (9 p.m. on NBC)

Sean Saves The World
"Sean Saves The World" premieres on NBC at 9 p.m. NBC

Welcome “Will & Grace” star, Sean Hayes, back to TV! Viewers will meet Sean, a divorced dad who is successfully juggling his job and weekends with his teen daughter, Ellie (Samantha Isler). But Sean gets thrown a wild card when 14-year-old Ellie moves in full time.

“Scandal” (10 p.m. on ABC)

"Scandal" airs on Thursdays on ABC at 10 p.m.

Get ready for the drama to resume when “Scandal” returns for its third season. In “It’s Handled,” Pope & Associates and the White House must deal with the fallout of the leaked affair. A surprising allegiance will be formed in order to “get things handled,” and viewers will learn more about Olivia’s father, Rowan – who will “stop at nothing to carry out his orders.”