What To Watch: The Chi, Yellowstone And 5 Other Finales, NXIVM Docuseries, Biden/Harris Interview And More

On TV this Sunday: The Chi, NOS4A2 and Yellowstone wrap their seasons, The Vow chronicles the inner workings of the NXIVM cult, and Joe Biden and Kamala Harris partake in their first joint interview. Here are 12 programs to keep on your radar; all times are Eastern.

Showtimes for August 23, 2020

ET

Elena of Avalor

Disney Channel

Series finale (90 minutes): Elena must journey to the Spirit World and back to save her kingdom, family and friends before her coronation. (Watch promo.)

ET

Big Brother

CBS

HOH Tyler names his nominations for eviction; two players secure their stay with the third Safety Suite competition. (Did the right houseguest go home?)

Love in the Time of Corona

Freeform

Limited series finale (two episodes): Paul recruits Sophie to help him plan a romantic evening; Elle and Oscar navigate their new relationship; James and Sade discuss raising a Black child in America's current climate.

NHL Stanley Cup Playoffs

NBC, NBCSN

Two games: The Boston Bruins take on the Tampa Bay Lightning (8 pm, NBC); the Vancouver Canucks face off against the Vegas Golden Knights (10:30 pm, NBCSN).

Sunday Best

BET

Season 10 finale: The winner of the gospel singing competition is revealed; The Clark Sisters, Erica Campbell, Jonathan McReynolds and more perform.

The Ticket: The First Interview

ABC

David Muir sits down with Democratic presidential nominee Joe Biden and running mate Sen. Kamala Harris in their first joint interview; Robin Roberts speaks with the candidates about the historic ticket.

ET

The Chi

Showtime

Season 3 finale: Emmett and Tiff step toward their future; Ronnie finds absolution; Kevin, Jake and Papa mature via life events. (Not yet renewed.)

Endeavour

PBS

Season 7 finale: A freak accident at Lady Matilda's College uncovers a link between a series of accidents happening across Oxford.

Lovecraft Country

HBO

Atticus grows suspicious of their hosts at the Ardham Lodge; Tic, Leti and George find a clue that could lead to Montrose. (The premiere earned an "A-.")

Yellowstone

Paramount Network

Season 3 finale: As the battle for the land's future heats up, John negotiates with former friends and current enemies. (Read preview; already renewed!)

ET

NOS4A2

AMC, BBC America

Season 2 finale: Lou and Tabitha solve a Christmasland riddle, while Vic McQueen makes a final stand against Charlie Manx. (Not yet renewed.)

The Vow

HBO

This nine-part docuseries chronicles the rise and fall of the NXIVM cult and its leader, Keith Raniere, who was convicted of sex trafficking and racketeering conspiracy. (Watch trailer.)

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