A group on Mars takes drastic measures; Margo grapples with a new assignment.
Monarch: Legacy of Monsters
Apple TV+
May finally faces her past; Duvall and Shaw follow traces of Godzilla and Hiroshi. (Burning questions, answered!)
Saltburn
Prime Video
Streaming premiere: A student at Oxford University (The Banshees of Inisherin's Barry Keoghan) finds himself drawn into the world of a charming and aristocratic classmate (Euphoria's Jacob Elordi), who invites him to his eccentric family's sprawling estate for the summer; Rosamund Pike (The Wheel of Time), Carey Mulligan and Richard E. Grant co-star.Courtesy of Prime Video/Everett Collection
What If...?
Disney+
Season 2 premiere: The first episode asks, "What If... Nebula Joined the Nova Corps?" (A new installment drops every day through Saturday, Dec. 30.)
ET
A Home for the Holidays
CBS
One hour: Take in uplifting adoption stories in this 25th annual special; Katharine McPhee hosts; Lauren Daigle, Gavin DeGraw, Pentatonix and CeCe Winans perform.
New business ventures take shape for the Thomas family, but the outlook is bleaker for the Mathis brothers; Raq makes a risky move for Kanan's obedience.
Santa Claus Is Comin’ to Town
ABC
The 1970 Rankin/Bass stop-motion classic follows a young Kris Kringle as he thwarts the evil Burgermeister Meisterburger.
ET
The UnBelievable With Dan Aykroyd
History Channel
Aykroyd examines weird weapons including bazooka Vespas and bats with tiny bombs strapped to their chests.
ON THIS DAY IN TV HISTORY
35 years ago, the wedding day for General Hospital's Sean Donely and Elsie Mae Krumholz Tiffany Hill got underway.