What’s On Tonight: ‘Vikings’ Returns And ‘Scandal’ Forms An Unlikely Partnership

Scandal (ABC, 9:00 p.m.) — Mellie’s trying to start a tag team with Olivia while Cyrus and Abby go the full 12 rounds over a potential profile piece on Fitz.

Vikings (History, 10:00 p.m.) – Season four premiere. A deadly battle for succession begins after a very ill Ragnar returns. Deadly succession battles are the best kind!

How to Get Away With Murder (ABC, 10:00 p.m.) — The screen will probably get all wavy because this episode features a flashback into Annalise’s past.

You, Me and the Apocalypse (NBC, 8:00 p.m.) — Ariel learns about the government’s big ol’ secret and Rhonda learns something about herself while she’s living life on the lam.

Workaholics (Comedy Central, 10:00 p.m.) — The guys change their Twitter bio to include “social media maven,” probably because they’re trying to become Internet famous.

The Blacklist (NBC, 9:00 p.m.) — Liz doesn’t know what to do with her baby, and Red has his sights set on a notorious killer who may or may not have just assassinated the head of an Internet startup.

Big Bang Theory (CBS, 8:00 p.m.) — Bernadette is preggers, so the gang celebrates with karaoke. Ya know, as you do.

DC Legends of Tomorrow (The CW, 8:00 p.m.) — Snart gets his Steve McQueen on when a bunch of the heroes wind up in a Russian labor camp.

American Idol (FOX, 8:00 p.m.) — And then there were 14.

Life in Pieces (CBS, 8:30 p.m.) — Matt meets Colleen’s mom and John flat out refuses to age gracefully.

Mom (CBS, 9:00 p.m.) — What’s up, Rhea Perlman? Oh, and Christy and Bonnie try to save Marjorie’s wedding day.

The 100 (The CW, 9:00 p.m.) — Clarke sings a War song, basically, as Raven becomes a target.

2 Broke Girls (CBS, 9:30 p.m.) — Caroline sees her name in lights when she pours her heart out at a storytelling night

London Spy (BBCA, 10:00 p.m.) — Aaaaaaand fin. Danny learns the truth about Alex’s death in the series finale.

Elementary (CBS, 10:00 p.m.) — Someone used mushrooms to kill a botanist and her students, so I guess Holmes is gonna talk to Batman to try to figure out where Poison Ivy’s hanging her hat up these days.

Portlandia (IFC, 10:00 p.m.) — Candace and Claire come face-to-face and discuss high culture at a swanky party.

Baskets (FX, 10:00 p.m.) — Chip joins The Babysitters Club when Dale grows tired of gettin’ the wrong end of the deal.

Shades of Blue (NBC, 10:00 p.m.) — Wozniak feels sorry for himself after trying to take out Saperstein, and Stahl’s almost to the bottom of the whole Harlee and Miguel backstory.

Colony (USA, 10:00 p.m.) — Will, Katie and Snyder are down in the Yonk, which isn’t, but certainly should be a Dr. Seuss character.

Idiotsitter (Comedy Central, 10:30 p.m.) — Gene’s biological mother swings by unannounced and Billie’s getting her teeth cleaned/dating a dental hygienist.

Late Night Guests:

The Late Show With Stephen Colbert — Tea Leoni, Amanda Peet, Triumph the Insult Comic Dog and Jeffrey Tanenhaus

The Late Late Show With James Corden — Katie Couric, Gillian Jacobs and Anders Holm

The Tonight Show Starring Jimmy Fallon — Vince Vaughn, Ryan Seacrest and Dead & Company

Jimmy Kimmel Live — Kerry Washington, Nikolaj Coster-Waldau and Jason Derulo

Late Night With Seth Meyers — Kiefer Sutherland and Carice van Houten