Dec. 3: "Heaven Sent," 8 p.m. Lifetime. An 8-year-old runaway angel helps rekindle the love between a man and woman. Starring Christian Kane, Marley Shelton and Ernie Hudson. Directed by Michael Landon Jr. Dec. 4: Holiday marathon on Freeform. 7 a.m. "'Twas the Night Before Christmas"; 7:30 a.m. "Nestor, the Long-Eared Christmas Donkey"; 8 a.