Life Unexpected | 9pm on The CW

Season Premiere: Ryan and Cate return from their honeymoon and discover major changes at the radio station; Baze hooks up with a new bartender; Lux befriends Eric, a newcomer to Portland.

Hellcats | 9pm on The CW

Series Premiere | Marti, a law student, tries out for the university’s legendary cheer squad in hopes of landing a scholarship that will allow her to stay in school.

Big Brother | 8pm on CBS

Either Ragan and Hayden are going home tonight. The head-of-household competition takes place.

The Real Housewives of New Jersey | 10pm on Bravo

Part 1 of a two-part reunion edition features reassembled Jersey girls Teresa, Caroline, Jacqueline and Danielle dissing and dishing about Season 2’s panorama of mama dramas.

Emmy Awards | 8pm on NBC

Ceremonies at the Nokia Theatre in Los Angeles honor excellence in TV programming; Jimmy Fallon hosts. Watch the awards with other TV fans. Join GMMR for a live Emmy chat starting at 8pm tonight.

Huge | 9pm on ABC Family

Alistair pretends Becca is his girlfriend; Amber’s mother sneaks her a treat; Will’s parents do not show up.

Lake Placid 3 | 9pm on Syfy

Killer crocodiles and their offspring terrorize residents of a small community. EUREKA’s Colin Ferguson stars

Wife Swap Season Finale | 8pm on ABC

A fun and flamboyant metropolitan couple swap with a strict mom and dad who moved to the country to protect their kids from the influences of the city.

Pretty Little Liars Summer Finale | 8pm on ABC Family

The girls go “glamping” as A’s threats escalate and the FBI arrives in Rosewood, PA.

The Bachelor Pad | 8pm on ABC

19 former castoffs from the THE BACHELOR and THE BACHELORETTE go head to head for $250,000 and possibly a second chance at love.

Persons Unknown | 8pm on NBC

Joe endures a series of flashbacks, dreams and hallucinations; McNair and Blackham confront their troubled pasts; Renbe and Kat search for the only person who has escaped the program.

Doctor Who | 9pm on BBC America

Rory maintains a vigil for Amy while the Doctor is trapped in the Pandorica, and the key to restoring the universe may lie with a little girl who still believes in stars in the 5th-season finale.

Celebrity Ghost Stories | 9pm on Bio

Michael Imperioli meets a tormented spirit; Joan Collins enranges a ghost; Donna D’Errico befriends a spirit; a spirit helps Corey Feldman get his life on track.

So You Think You Can Dance | 9pm on FOX

Will injured dancer, Ashley, survive after an automatic spot in the bottom 3?

Harry Potter and the Goblet of Fire | 7:30pm on ABC Family

Signs of Voldemort’s return emerge as Harry’s friends help him prepare for a tournament with Europe’s best student wizards. Based on a book by J.K. Rowling. Daniel Radcliffe, Rupert Grint, Emma Watson, Robert Pattinson