Arrow (CW, 8 p.m.) – Season finale. Arrow ends its first season tonight. One of the characters on this show is named Dark Archer. The character is not Sterling Archer’s evil twin. This is a shame, because the version of Archer we already know is so depraved that the concept of one that is evil to such a degree that he must be called “Dark” Archer is terrifying in the best possible way. (Gamma Squad has your live blog tonight.)
Supernatural (CW, 9 p.m.) – Season finale. According to the summary of tonight’s episode, the Winchester brothers try one final play against the Demon King. So there’s that.
CSI: Crime Scene Investigation (CBS, 10 p.m.) – Season finale. This show is still on the air. Ted Danson is on it now. Twenty years from now it will star the tall guy from Big Bang Theory. It will outlive us all.
Modern Family (ABC, 9 p.m.) – Phil gets an RV. Not a good idea, buddy. Bad things happen in RVs.
Law & Order: SVU (NBC, 9 p.m.) – From TV Guide: “The detectives try to identify an unconscious woman found in a river near the mayor’s home, and through their investigation they discover that she’s an ordinary mom with a hidden wild side.” SVU CHECKLIST TIME: Dead woman: Check. Secret slut: Check. Powerful male suspect: Check. Yes, this is a very SVU episode of SVU.
Psych (USA, 10 p.m.) – Shawn and Gus go undercover at a radio station and end up on-air. This is basically my dream.
LATE NIGHT GUESTS: Jason and Jarron Collins, J.J. Abrams, and Huey Lewis and the News are on Kimmel; Ed Helms and Hoda Kotb on Letterman; Ice-T and Paula Poundstone on Ferguson; Usher and Nick Offerman on Leno; Julie Bowen and Demi Lovato on Fallon; and Zach Galifiankis and Jim Gaffigan on Coman.