The Amazing Race returns with the first reality showdown among some of the most memorable and competitive players from The Amazing Race, Survivor and Big Brother.

Teams travel to Vietnam, where they must master synchronized dancing, karaoke singing and fishing for prawns.

Enemies are made when one team steals another team’s taxi in Ho Chi Minh, Vietnam.

Teams take a leap of faith when choosing which detour challenge to take on, and a split-second decision may make or break one team's life in the race.

Teams must drum up enough strength for an intense head-to-head battle before checking into the mat.

The Teams travel to Switzerland where they free-fall over 400 feet into the Gletscherschlucht Glacier Gorge.

While in Switzerland, teams are surprised with the first ever public U-turn vote, where racers have to vote in front of each other.

Teams take a bumpy ride in Split, Croatia and try not to get tongue-twisted reciting poetry while in motion.

The final five teams try not to crack while transporting eggs across town by bicycle in the Netherlands.

With the $1 million on the line, the final four teams race through London, where they take a helicopter ride to Dover Castle, and through Detroit, where they rappel nearly 500 feet down the Guardian Building. The team to cross the finish line first will be crowned the winners!