Former teen star Lisa Whelchel ("The Facts of Life") has sort of been flying under the radar so far on Survivor: Philippines (7 p.m., CBS/Ch. 2). Although there was a very sweet moment when she said how glad she was she had made friends there who liked her for her ... because they're too young to have seen "Facts of Life."
This week, however, Lisa starts doing some plotting and backstabbing. And there's a big confrontation at the Tribal Council that leads to a revelation.
So far, it's been a very good season of "Survivor."
Elsewhere on TV ...
The Middle (7 p.m. ABC/Ch. 4): Frankie's first day at dental-assistant school does not go well.
The Voice (7 p.m., NBC/Ch. 5): The top 20 performances continue.
Nature (7 p.m., PBS/Ch. 7): "Animal Odd Couples" include a goat guiding a blind horse; a doe visiting her Great Dane surrogate mother; and a gibbon living with a family of capuchins.
The X Factor (7 p.m., Fox/Ch. 13): The top 12 singers perform.
Arrow (7 p.m., CW/Ch. 30): Oliver is arrested for murder.
NBA (7 p.m., ROOT): Los Angeles Lakers at Utah Jazz
The Neighbors (7:30 p.m., ABC/Ch. 4): Zabvronian mating season begins.
Criminal Minds (8 p.m., CBS/Ch. 2): A killer is targeting prostitutes in Miami.
Modern Family (8 p.m., ABC/Ch. 4): Jay tries to keep his ex-wife (Shelley Long) from finding out that Gloria is pregnant.
NOVA (8 p.m., PBS/Ch. 7): Investigating the 900 ancient statues on Easter Island.
Supernatural (8 p.m., CW/Ch. 30): Sam and Dean search for an avenging ghost.
Suburgatory (8:30 p.m., ABC/Ch. 4): George and Dallas take their relationship to the next level.
CSI (9 p.m., CBS/Ch. 2): Russell's son is a suspect in the murder of a basketball coach.
Nashville (9 p.m., ABC/Ch. 4): Rayna thinks about moving on when Deacon holds her at arm's length.
Chicago Fire (9 p.m., NBC/Ch. 5): Dawson faces disciplinary action.
NOVA scienceNOW (9 p.m., PBS/Ch. 7): What are animals thinking?
South Park (11 p.m., Comedy Central): Cartman is hiding something that could change the outcome of the presidential election.
Top Chef: Seattle (11 p.m., Bravo): A new round of competition begins.
American Horror Story (11 p.m., FX): A new patient exposes Arden's past.
Key & Peele (11:30 p.m., Comedy Central): In one sketch, LMFAO cannot stop partying.