Families gather together for Thanksgiving. And not everyone enjoys it. But chances are, even your worst holiday nightmare can’t compare to the grim sibling dynamics described in “My Brother the Serial Killer” (8 p.m., ID).

Clay Rogers recounts a harrowing tale of a violent, impoverished upbringing that turned him and his brother, Glen, into petty burglars at the age of 7. Beaten and starved at home, Clay and Glen enjoyed robbing homes for money and valuables and never minded getting caught because the police treated them better than their parents did.

As a young adult, Glen parlayed his familiarity with police into a career as an informant, a gig that allowed him to pursue his criminal activities without much fear of prosecution.

By the time the brothers were in their 20s, Clay discovered that Glen had added homicide to his list of crimes. That became hard for Clay to endure. He eventually turned Glen into the authorities, but only after convincing himself that a killer had all but possessed his little brother’s soul and personality.

”Brother” has all of the elements of gothic horror: tales of brutality, bizarre and primitive religious rituals, arcane descriptions of tattoos and their powers, and even a strange scene of two men summoning the devil over a campfire. And this nonfiction account eventually tiptoes toward the granddaddy of all tabloid tales: the O.J. Simpson murder case.

Tonight’s other highlights:

• The gang discovers the Pilgrims’ story in the 1973 special “A Charlie Brown Thanksgiving” (7 p.m., ABC).

• John Candy and Steve Martin portray reluctant cross-country travelers in the 1987 comedy “Planes, Trains and Automobiles” (7 p.m., CW).

• Jay is encouraged to act his age on “Modern Family” (8 p.m., ABC).

• Five victims appear to have been killed by a meteorite on “CSI” (9 p.m., CBS).

• A series of crises punctuate Thanksgiving on “Chicago Fire” (9 p.m., NBC).

• The Monsignor and Dr. Arden strike a devil’s bargain on “American Horror Story: Asylum” (9 p.m., FX).

• The 1981 thriller “For Your Eyes Only” (11 p.m., Syfy) kicks off a two-day James Bond movie marathon.