“The Vampire Diaries” (8 p.m., CW): Season 6 concludes.

“The Vampire Diaries” (8 p.m., CW): Season 6 concludes.

“Grey’s Anatomy” (8 p.m., ABC): Season 11 concludes.

“The Odd Couple” (8:30 P.M., CBS): Oscar is audited in the first-season finale.

“Reign” (9 p.m., CW): Season 2 concludes.

“Scandal” (9 p.m., ABC): Season 4 concludes.

“Wayward Pines” (9 p.m., Fox): In the spooky summer “event” series “Wayward Pines,” Secret Service agent Ethan Burke arrives in a seemingly idyllic Idaho town looking for two missing comrades. That’s when things get really weird.

TV listings, B6