8-9 PM · THE CW · Returns Sept. 18

The gimmick for season 4? ''We're going to add one gorgeous guy and one geeky girl,'' says exec producer Jason Goldberg. ''The level of confusion when it hit was like, 'Whoa, where are we now?' You see contestants looking at themselves a different way based on the reflection — the girls seeing themselves in this guy and the guys seeing themselves in her.'' Also: ''We're going to do a lot of traveling. And a major online component.'' Some things never change, of course. Notes Goldberg: ''Once again, hookups left and right. It's crazy!''

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