Television for December 12, 2021 includes the season finales of HBO's
Succession, Discovery+'s
The Mating Game and Adult Swim's
Squidbillies; the original film debuts of Hallmark's
Sister Swap: Christmas in the City, CBS'
A Christmas Proposal and Lifetime's
Blending Christmas; the season premiere of TLC's
90 Day Fiancé: Before the 90 Days; and much more!
TV Tonight for Sunday, December 12
