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Well, here's something they didn't teach us in school about early America settlers. They might have eaten each other.

This week's episode of "Secrets of the Dead" (9:30 p.m., PBS/Ch. 7) — titled "Jamestown's Dark Winter" — is the story of the Jamestown settlement, the first permanent English colony in the Americas. The story is seen through the prism of a 14-year-old English girl whose skull and severed leg were discovered during the excavation of the trash layer of a cellar.

So … was there cannablism?

Elsewhere on TV ...

"NCIS" (7 p.m., CBS/Ch. 2): The team tries to help a sailor battling leukemia locate a bone marrow donor.

"The Voice" (7 p.m., NBC/Ch. 5): Contestants are eliminated.

"Grandfathered" (7 p.m., Fox/Ch. 13): Jimmy schedules his annual Malibu Thanksgiving day with a hot model, but he runs into Sara's former boyfriend.

"Manhattan" (7, 8, 9, 10 and 11 p.m., WGN): The hunt for a Soviet spy turns deadly.

"The Grinder" (7:30 p.m., Fox/Ch. 13): Dean is excited to spend a real Thanksgiving celebration with the family, but his meddling uncovers a family secret.

"NCIS: New Orleans" (8 p.m., CBS/Ch. 2): The murder of a Marine provides new clues in the first case Pride and Lasalle ever worked together, just before Hurricane Katrina struck the city — and washed away the evidence.

"Chicago Med" (8 p.m., NBC/Ch. 5): Dr. Choi treats a teen mother who abandoned her newborn baby in an alley.

"Scream Queens" (8 p.m., Fox/Ch. 13): Chanel goes to Chad's family home for Thanksgiving, where an uninvited guest wreaks havoc.

"Limitless" (9 p.m., CBS/Ch. 2): Boyle's former military buddy is charged with murder, but he claims his prosthetic arm was hacked to commit the crime.

"Chicago Fire" (9 p.m., NBC/Ch. 5): Boden suspects his neighbor is setting him up; Severide learns something about Patterson that could be a game changer.

"Finding Carter" (11 p.m., MTV): The Wilsons deal with Carter's absence in surprising ways.

"Chrisley Knows Best" (11 p.m., USA): Cracks in Todd and Julie's relationship appear they make an anniversary video.

"Drunk History" (11:30 p.m, Comedy Central):Soviet cosmonauts make the first spacewalk.

"Donny!" (11:30 p.m., USA): Donny preaches against the evils of trophy-hungry Little League dads, but has issues himself.