What To Watch: S.H.I.E.L.D. Vet Is The Winter King, When Calls The Heart Baby Arrives And More

On TV this Sunday: Iain De Caestecker stars in The Winter King, The Challenge: USA throws its players for a loop and When Calls the Heart's Rosemary goes into labor. Here are 10 programs to keep on your radar. (Also check out our weekly TVLine-Up of premieres and finales, plus our monthly streaming guide.)

Showtimes for August 20, 2023

ET

Special Ops: Lioness

Paramount+

Bobby, Tex, Two Cups, Randy and Tucker confront a threat at the safe house; Kaitlyn and Joe are scolded by Secretary of State Mullins (Morgan Freeman).

ET

Big Brother

CBS

The new head of household nominates two houseguests for eviction. (Who was evicted last?)

Billions

Showtime

Chuck negotiates with a ghost from his past to advance a new agenda; Axe shares a glimpse into his new life.

The Chosen

The CW

Jesus' followers slowly gain faith and witness some very incredible things.

The Winter King

MGM+

Series premiere: In a retelling of the Arthurian legend, King Arthur (Agents of S.H.I.E.L.D.'s Iain De Caestecker) begins his life as one of Merlin's (I Hate Suzie's Nathaniel Martello-White) orphans, but not even the warlord's exile from Britain can prevent his return and eventual reign. (Watch trailer.)

ET

The Challenge: USA

CBS

An impending double elimination raises the stakes, as the players scramble to win a high-stakes semi-truck challenge. (Read Episode 3 recap.)

The Chi

Showtime

Emmett receives an unexpected gift; Darnell issues a warning, while Rob looks for clues. (Read Episode 2 recap.)

Dark Winds

AMC

Leaphorn risks his life in pursuit of a suspect; Chee considers a dangerous proposition. (Watch sneak peek.)

When Calls the Heart

Hallmark Channel

As Rosemary goes into labor, the entire town shows up to support her.

Winning Time: The Rise of the Lakers Dynasty

HBO

In the '70s, college drop-out Larry Bird fends off multiple offers; in the '80s, Coach Westhead risks it all on a key move.

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