This is an archived article that was published on sltrib.com in 2016, and information in the article may be outdated. It is provided only for personal research purposes and may not be reprinted.

What do you do when evil outer-space aliens invade your planet? Superheroes from all of your shows combine forces in a four-part television event that starts on "Supergirl," continues on "The Flash" and "Arrow" and concludes on "DC's Legends of Tomorrow." It's a four-day geek TV event the likes of which we've never seen before.

Watch • 7 p.m. Monday-Thursday, CW/Ch. 30 The Week Ahead

'This Is Us'

Kate, Kevin and Randall head to their family's cabin to recover.

Watch • 8 p.m. Tuesday, NBC/Ch. 5

'Drunk History'

Lin-Manuel Miranda tells the story of Alexander Hamilton.

Watch • 11:30 p.m. Tuesday, Comedy Central

College basketball

BYU vs. Utah State in Salt Lake City.

Watch • 7 p.m. Wednesday, BYUtv

'Dolly Parton's Christmas of Many Colors: Circle of Love'

TV movie sequel.

Watch • 8 p.m. Wednesday, NBC/Ch.5

'Supernatural'

Lucifer loves being a rock star.

Watch • 8 p.m. Thursday, CW/Ch. 30 This Weekend

NBA

Atlanta Hawks at Utah Jazz.

Watch • 6 p.m. Friday, ROOT

'Once Upon a Sesame Street Christmas'

New holiday special.

Watch • 8 p.m. Friday, HBO

College football

Utah at Colorado; Utah State at BYU

Watch • Saturday — 6 p.m., Fox/Ch. 13 (Utah); 8:15 p.m., ESPNU (BYU-USU)

'Madam Secretary'

On election day, Elizabeth has to hold together a peace deal with Iran.

Watch • 8 p.m. Sunday, CBS/Ch. 2

'Poldark'

Ross and Demelza confront their demons. (Season finale.)

Watch • 8 p.m. Sunday, PBS/Ch. 7

'WestWorld'

Dolores and Bernard reconnect with their pasts.

Watch • 10 p.m. Sunday, HBO