Final Vision (8 p.m., Investigation Discovery) – A new movie about the 1970 murders of Jeffrey MacDonald’s family in Fort Bragg, told from the perspective of writer Joe McGinniss, who shadowed MacDonald during his 1979 trial in Raleigh and wrote the book “Fatal Vision.” Scott Foley (“Scandal”) plays MacDonald and Dave Annable (“Brothers & Sisters”) plays McGinniss. At 10 p.m., there’s a special called “Dr. Jeffrey MacDonald: People Magazine Investigates,” which tells the story through interviews and archival footage.
Also on tonight . . .
NC Bookwatch (Noon, UNC-TV) – Elizabeth Cox talks about “A Question of Mercy.”
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Sharing Christmas (8 p.m., Hallmark) – A real estate developer wants to transform an old shopping complex, but the one tenant holding out is the Christmas shop owner.
Jaguar vs. Croc (9 p.m., Nat Geo Wild) – This show kicks off Nat Geo Wild’s “Big Cat Week.” Wildlife photographer Steve Winter and cameraman Bertie Gregory capture the lives of jaguars in the Pantanal of Brazil, and a mother jaguar teaching her cub survival. Also, a male jaguar dives headfirst into the river to tackle a six-foot-long caiman.
The Walking Dead (9 p.m., AMC) – Every story and battle from the first half of the season comes crashing together in the emotional mid-season finale.
Royal Christmas Ball (9 p.m., ION) – Bachelor King Charles of Baltania doesn’t have a date for the Christmas ball, so he tracks down his American college sweetheart, who has a 17-year-old daughter. Then he does the math.
Maggie’s Christmas Miracle (9 p.m., Hallmark Movies & Mysteries) – A single mother’s son needs help at school, so she gets him a tutor, who becomes a father figure. Based on the novel by Karen Kingsbury.