Simon Cowell, Sofia Vergara, Heidi Klum, Howie Mandel and host Terry Crews return. A variety of acts featuring contestants of all ages audition for the chance to win $1 million. The Golden Buzzer allows a lucky act to go directly to the Live Shows.

The auditions continue as a variety of acts featuring contestants of all ages audition for the chance to win the $1 million prize. The Golden Buzzer is back, allowing a lucky act the chance to go directly to the Live Shows to compete for America's vote.

The auditions continue as a variety of acts featuring contestants of all ages audition for the chance to win the $1 million prize. The Golden Buzzer is back, allowing a lucky act the chance to go directly to the Live Shows to compete for America's vote.

The auditions continue as a variety of acts featuring contestants of all ages audition for the chance to win the $1 million prize. The Golden Buzzer is back, allowing a lucky act the chance to go directly to the Live Shows to compete for America's vote.

The auditions continue as a variety of acts featuring contestants of all ages audition for the chance to win the $1 million prize. The Golden Buzzer is back, allowing a lucky act the chance to go directly to the Live Shows to compete for America's vote.

The auditions continue as a variety of acts featuring contestants of all ages audition for the chance to win the $1 million prize. The Golden Buzzer is back, allowing a lucky act the chance to go directly to the Live Shows to compete for America's vote.

The auditions continue as a variety of acts featuring contestants of all ages vie for the chance to win the $1 million prize.

Judge Simon Cowell and host Terry Crews look back at the most memorable auditions in America's Got Talent and Britain's Got Talent history.

The auditions continue as a variety of acts featuring contestants of all ages vie for the chance to win the $1 million prize. The Golden Buzzer is back, allowing a lucky act the chance to go directly to the live shows to compete for America's vote.

The auditions continue as a variety of acts featuring contestants of all ages vie for the chance to win the $1 million prize. The Golden Buzzer is back, allowing a lucky act the chance to go directly to the live shows to compete for America's vote.

As the auditions come to a close, host Terry Crews previews some of the most memorable acts of the season moving on to the live shows.

Eleven performers take the stage live from the Pasadena Civic Auditorium as judging is turned over to the audience to vote for their favorite performer to move to the final round.

Two acts from the previous night's show move on to the final round of competition.

Eleven performers take the stage live from the Pasadena Civic Auditorium as judging is turned over to the American audience to vote for their favorite performer to move to the final round.

Two acts from the previous night's show move on to the final round of competition.

Eleven performers take the stage live from the Pasadena Civic Auditorium as judging is turned over to the American audience to vote for their favorite performer to move to the final round.

Two acts from the previous night's show move on to the final round of competition.

Eleven performers take the stage live from the Pasadena Civic Auditorium as judging is turned over to the American audience to vote for their favorite performer to move to the final round.

Two acts from the previous night's show move on to the final round of competition.

Eleven performers take the stage live from the Pasadena Civic Auditorium as judging is turned over to the American audience to vote for their favorite performer to move to the final round.

Two acts from the previous night's show move on to the final round of competition. The Instant Save vote returns, allowing America to send one additional act to join the finals.

The top 11 acts perform one last time for their chance to win $1 million and be named the most talented act in America.

Host Terry Crews reveals who America has chosen as the Season 18 winner in the two-hour finale featuring special guest performers.