8 p.m. ET on CW – Season Finale Fred (Luke Perry) could use a boost on Election Day, so Archie (KJ Apa) decides to help in the show’s second-season finale, “Chapter Thirty-Five: Brave New World.” Veronica (Camila Mendes) tries to stay in front of Hiram’s (Mark Consuelos) new plot. Cheryl (Madelaine Petsch) wins her independence legally. Betty (Lili Reinhart) engages in what may be her ultimate battle … against herself. Cole Sprouse, Skeet Ulrich, Marisol Nichols, Madchen Amick, Ashleigh Murray and Casey Cott also star.
9 p.m. ET on ABC – Season Finale
A Comic-Con-type event lures Phil and Mitchell (Ty Burrell, Jesse Tyler Ferguson) in “Clash of Swords,” the finale of the comedy’s ninth season. Once there, Phil ends up making a very serious misstep for any fan. Gloria (Sofia Vergara) finds herself in competition with Dr. Donna Duncan (guest star Jane Krakowski, “30 Rock”) to stage the bigger and better party. Julie Bowen, Ed O’Neill, Eric Stonestreet, Sarah Hyland, Ariel Winter and Rico Rodriguez also star.
9:01 p.m. ET on CBS – Season Finale
Jason (David Boreanaz) plays injured — though no one else knows it — by trying to keep the extent of his concussion secret in “The Cost of Doing Business,” which ends the adventure-drama’s first season. He’s determined to see that those who staged the attack on Echo Team pay an appropriate price, even if he puts his health at risk to do so. Max Thieriot, Neil Brown Jr., Jessica Pare, A.J. Buckley and Toni Trucks also star.
9:31 p.m. ET on ABC – Season Finale
After all her work on “The Spring Gala” — which also happens to be the title of this Season 2 finale of the sitcom — Katie (Katy Mixon) panics when just about everything arranged for the event starts to go haywire. She finally pulls it all together, determined that the occasion will be successful. While her attention is focused elsewhere, Greg (Diedrich Bader) decides to adopt a dog. “Castle” alum Nathan Fillion continues his guest role as … himself.
10 p.m. ET on NBC
In the days leading up to the big event in England this coming weekend, there’s no shortage of television fare about the occasion and the couple, as this new special helps to affirm. “Today” co-anchors Savannah Guthrie and Hoda Kotb host the hour, which is scheduled to feature certain wedding invitees giving their insights on the love story of Prince Harry and Meghan Markle. Entertainment figures and fashion experts also are slated to weigh in on the nuptials.