Grey's Anatomy (ABCat8) In the midseason finale, a computer hacker causes chaos at Grey Sloan Memorial.

Gotham (Foxat8) Professor Pyg crashes an important fundraiser.

Young Sheldon (CBSat8:30) Sheldon discovers comic books while reeling from a traumatic experience.

Arrow (CW at 9) The Green Arrow leads the team in a battle against a technology thief known as "Dragon."

Mom (CBSat9) Sparks fly between Christy and her classmate (guest star Michael Angarano).

How to Get Away With Murder (ABCat10) A shocking revelation threatens Annalise's sobriety in the fall finale.

S.W.A.T. (CBSat10) Jim Street jeopardizes his career when he agrees to do a favor for his incarcerated mother. Sherilyn Fenn ("Twin Peaks") guest stars.

Premiere

Back (Sundance Now streaming) An underachieving man takes over his family's business in this comedy from Simon Blackwell ("Veep").

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Documentary

Hot Grease (Discoveryat9) This documentary explores the burgeoning industry built around used kitchen grease.

Special

Jeff Ross Roasts The Border: Live from Brownsville, Texas (Comedy Central at 10) The comedian visits the U.S.-Mexico border to get a deeper understanding of the immigration debate, then analyzes the issues through stand-up.

FINALE

Better Things (FXat10) Pamela Adlon's dramedy ends its second season.

Late Night

Daily Show (Comedy Central at 11)Jordan Peele.

Colbert (CBS at 11:35)Ben Affleck, Greta Gerwig, Dead & Company.

Kimmel (ABC at 11:35)Julia Roberts, Frankie Shaw, Manchester Orchestra.

Fallon (NBC at 12:05)Chance the Rapper, Tim McGraw, Faith Hill.

Corden (CBS at 12:37)Debra Messing, Taran Killam, Sam Rockwell, Bebe Rexha, Florida Georgia Line.

Meyers (NBC at 1:07)Chris Hayes, Alex Lahey.

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