A season of teenage trials and tribulations comes to a close in this one-hour finale. Young Tessa has taken an interest in getting to know her biological mom, while Dallas set her sights on getting to know George a little better. ABC/Citytv, 7 p.m.
When Reid discovers that his girlfriend has been kidnapped by her stalker, the team rushes out to find her before it's too late. Michelle Trachtenberg guest stars as Diane, a genetics research assistant. CBS, 8 p.m.
The journey continues as the remaining contestants take the stage. Judges Mariah Carey, Nicki Minaj, Keith Urban and Randy Jackson offer their thoughts on the performances, but the viewers are the ones who vote for their favourites. Fox/CTV, 7 p.m.
George Stroumboulopoulos: Paul Anka
Jay Leno: Keith Urban, Paula Deen
David Letterman: Selena Gomez, Bob Sarlatte
Jimmy Kimmel: Harrison Ford, Anthony Mackie
Craig Ferguson: Kelly Osbourne, Breckin Meyer
Jimmy Fallon: Steve Carell, Abigail Breslin
Conan O'Brien: Kate Upton, Fall Out Boy