The teams race through Las Vegas, where they face a final challenge designed by magician David Copperfield.

Eleven all-star teams compete for a chance to win the $1 million top prize as the 24th season begins. However, in a dramatic twist, one duo won't make it to the starting line. The other pairs jet off to Guangzhou, China.

The race continues in Kuala Lumpur, Malaysia. A racer pours blood and tears into a roadblock; a particularly difficult detour makes a racer melt down.

The teams are in Sri Lanka, where an exhausting Roadblock drains the racers of all their strength. Also, an epic race through the countryside ends with a footrace to the Pit Stop.

Tension rises as the finish line gets closer; three teams form an alliance.

Mallory and Mark struggle with communication and a major mistake puts them in jeopardy.

The race continues in Kota Kinabalu, Malaysia. The teams face rapids in the Malaysian jungle on homemade rafts; a team fights to stay in the running after taxi trouble.

The racers square off with Roman gladiators in a medieval detour; three teams make a deal in hope of avoiding elimination.

A double U-turn in Spain threatens the alliance; one team's future is threatened by a possibly game-changing injury.

Six teams encounter a double U-turn; one team considers a major decision.

The final four teams have a once-in-a-lifetime experience in Liverpool, England; a misinterpretation puts one team in jeopardy.

Teams face struggles as they go fishing for their next clue in Sri Lanka.