8 p.m. on 2, 9, “Once Upon a Time” — Is this the end for Storybrooke? The town’s residents brace themselves for the worst when the trigger that Regina (Lana Parrilla) placed within the curse is detonated. Jennifer Morrison, Ginnifer Goodwin and Robert Carlyle also star in the season finale, “And Straight on ‘Til Morning.”

8 p.m. on 6, “Survivor: Caramoan — Fans vs. Favorites” — Whether they’re still active players or returnees whose torches already have been snuffed out, all the participants in the series’ 26th round are back for the two-hour season finale as someone wins the $1 million grand prize. Jeff Probst is the host here and also of the traditional reunion special that follows immediately.

9 p.m. on 2, 9, “Revenge” — A series of dangerous events comes to a head in the two-hour season finale, resulting in a heartbreaking death that changes everyone’s lives forever and has Emily (Emily VanCamp) re-evaluating the path of revenge she’s chosen. Madeleine Stowe, Henry Czerny, Gabriel Mann and Nick Wechsler also star in “Truth.”

9 p.m. on TLC, “Long Island Medium” — She’s back! Medium Theresa Caputo returns, along with her lovable sidekick — husband Larry — and kids Larry Jr. and Victoria. Theresa continues to help other families find closure and peace by connecting them with those they have lost.

9 p.m. on HBO, “Game of Thrones” — Daenerys (Emilia Clarke) exchanges gifts with a slave lord. Tyrion’s (Peter Dinklage) new situation doesn’t sit well with Shae (Sibel Kekilli). Tywin (Charles Dance) counsels the king. Sansa (Sophie Turner) isn’t happy about her prospects. Melisandre (Carice van Houten) shares a secret with Gendry (Joe Dempsie). Gwendoline Christie also stars in the new episode “The Bear and the Maiden Fair.”

10 p.m. on SHO, “The Borgias” — With help from Machiavelli (Julian Bleach), Cesare (Francois Arnaud) succeeds on his mission to France. Alexander and Sforza (Jeremy Irons, Peter Sullivan) conspire to repay Gonzaga (Patrick O’Kane) for his cruelty after Bianca’s (Melia Kreiling) suicide. When King Ferdinand (Matias Varela) refuses to budge on the matter of recognizing Giovanni at court, Lucrezia (Holliday Grainger) plots to poison him in the new episode “The Wolf and the Lamb.”