Carrie Underwood, Luke Bryan and Lionel Richie will return as judges in 'American Idol' Season 24.

American Idol: Luke Bryan, Lionel Richie & Carrie Underwood all back for Season 9; Ryan Seacrest expected to join them. Plus, audition information.

Carrie Underwood, Luke Bryan, Lionel Richie, and Ryan Seacrest are giving 'Entertainment Weekly' an exclusive behind-the-scenes look at season 23 of 'American I...