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After seven seasons and 151 episodes, tonight is the end for "The Mentalist" (7 and 8 p.m., CBS/Ch. 2).

In the first episode, Patrick Jane (Simon Baker) agrees to be the bait to draw out a serial killer. In the second episode, Teresa Lisbon (Robin Tunney) accepts Jane's surprise marriage proposal, but a killer's quest for revenge may cost them the happy ending they've worked so hard to achieve in the series finale.

I'm thinking things will work out. It would pretty much suck to disappoint the show's fans, wouldn't it?

Elsewhere on TV ...

"The Middle" (7 p.m., ABC/Ch. 4): How did Sue respond to Darrin's marriage proposal? (OMG, she's still in high school.)

"The Mysteries of Laura" (7 p.m., NBC/Ch. 5): An au pair is murdered, and the investigation leads to an escort ring.

"Nature" (7 p.m., PBS/Ch. 7): An examination of "Owl Power."

"American Idol" (7 p.m., Fox/Ch. 13): The showcase begins.

"Arrow" (7 p.m., CW/Ch. 30): Despite being under strict orders from Amanda Waller not to reveal himself to anyone, Oliver looks in on his family.

"The Goldbergs" (7:30 p.m., ABC/Ch. 4): Murray takes away Erica's driving privileges.

"Modern Family" (8 p.m., ABC/Ch. 4): Gloria wants Jay to teach Manny how to stand up to a bully.

"Law & Order: SVU" (8 p.m., NBC/Ch. 5): Benson gets some life-changing news.

"Nova" (8 p.m., PBS/Ch. 7): A look at the ancient city of Petra in what is now Jordan.

"Empire" (8 p.m., Fox/Ch. 13): Lucious' medical secret is revealed.

"The 100" (8 p.m., CW/Ch. 30): Clarke begins to question Lexa's (guest star Alycia's leadership decisions.

Men's college basketball (8 p.m., ROOT): Utah State at San Jose State

"Blackish" (8:30 p.m., ABC/Ch. 4): Zoey brings home her first serious boyfriend, and he turns out to be a French.

"Stalker" (9 p.m., CBS/Ch. 2): Beth's former stalker goes on a terrifying and deadly rampage targeting her inner circle.

"Nashville" (9 p.m., ABC/Ch. 4): Rayna is not happy about Jeff's plan to sign Maddie to Edgehill.

"Chicago PD" (9 p.m., NBC/Ch. 5): Burgess and Roman get trapped while nvestigating a smuggling operation.

"Melissa and Joey" (9 p.m., ABC Family): Mel discovers Joe's deep, dark secret — he was once in a boy band.

"Baby Daddy" (9:30 p.m., ABC/Family): Ben and Danny reunite Tucker and his college sweetheart.

"The Americans" (11 p.m., FX): Philip faces a moral dilemma; Paige makes a surprising birthday wish.

"It's Always Sunny in Philadelphia" (11 p.m., FXX): The gang gets all introspective.

"Suits" (11 p.m., USA): Mike takes on a humanitarian case that could jeopardize firm business.

"Man Seeking Woman" (11:30 p.m., FXX): Josh finds a new girlfriend.