Phil Keoghan Phil Keoghan

All bets are off on Sunday's Amazing Race All-Stars finale. The final three teams — Dave and Connor, Caroline and Jen, and Brendon and Rachel — will head to Las Vegas, where they'll skydive and participate in David Copperfield's great escape challenge on the way to the closest finish since Season 2's epic footrace.

"I remember saying to the other teams waiting at the finish, watching them come to the mat, 'Who's it going to be?' It was down to the wire," Phil Keoghan tells "It's a different kind of show. We took advantage of being in Vegas; it was just showing off. We've never had a final leg at night. If you're gonna do a leg at night, Vegas is the place to do it."

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