The Devil Wears Prada director David Frankel (pictured) will serve as the guest judge beside regulars Carrie Fisher and Garry Marshall on the moviemaking competition series On the Lot tonight.

The remaining 15 director finalists have been divided into three groups of five. Last week, the first group of five director finalists â€" Sam Friedlander, Hilary Graham, Trever James, Shalini Kantayya and Adam Stein â€" each premiered a film that he or she wrote, shot and edited in five days. The judges offered their critiques, and viewers voted for their favorite films after the show.

On Tuesday, one of the five will be told "It's a wrap" and will be eliminated from the competition. In addition, the second group of five director finalists will premiere their films for the judges' feedback, and viewers again will vote for their favorites after the broadcast.

On the Lot is produced by Mark Burnett Productions, DreamWorks Television and Amblin Television. Mark Burnett and Steven Spielberg are creators and executive producers. David Goffin serves as executive producer with Darryl Frank, Justin Falvey and Conrad Riggs co-executive producers.