End Nearing For 'Survivor: The Amazon'

It's down to the Final Four in Survivor: The Amazon and what started out as a battle between the sexes is turning into a fight to the finish.

"Everyone is anticipating a large reward," says Survivor contestant Butch Lockley, the 50-year-old middle school principal from Olney, Ill.

By the end of the two hour season finale to be aired Sunday, 8 p.m. ET on CBS, one of the contestants will be crowned the ultimate Survivor and win a million dollars.

But to achieve that title, the remaining Survivors must eliminate their competition.

The men are targeting the lone women, Jenna Morasca. But the 21-year-old swimsuit model from Pittsburgh, Pa. vows to turn things around. It won't be easy, however, because the next two Immunity Challenges and Tribal Councils will be grueling.

Meanwhile, Rob Cesternino, the 24-year-old computer projects coordinator from Wantagh, N.Y. and self-proclaimed Survivor expert, finds his anxieties at an all time-high. "By stomach is in a knot," he says.

And Mathew Von Ertfelda, the 33-year-old restaurant designer from Washington, D.C., is very much alive to win the grand prize.

The winner will be announced live, from Central Park in New York, just across the street from The Early Show's studio.