Season 17, Episode #16 - Hell's Kitchen: All-Star Finale
The final two choose one previous contestant from the season to help in the finale.
Season 17, Episode #15 - Hell's Kitchen: Final Three
The three final All-Stars visit the Calamigos Ranch in Malibu, Fla., where they participate in a final challenge before the final two are chosen.
Hell's Kitchen: The Final Contestants Have One Hour To Prepare A Menu
The final three contestants have one hour to prepare a menu.