SURPRISE GAME-CHANGING TWIST IN LAST EPISODE BEFORE LIVE FINALE -- In the last episode before the live finale, the final four contestants return from Australia without their trainers and attempt to train themselves for their last week on the ranch. Celebrity Chef Rocco Dispirito visits again to teach the contestants how to make healthy versions of their favorite dishes before heading home, and the final four all watch videos of their most memorable moments on campus. At the weigh-in, two of the four players fall below the yellow line, but there’s one last surprising twist. For the first time ever in “Biggest Loser” history, America will determine who the third finalist will be by voting online on the two that fall below the yellow line. Who they choose to be a finalist – and who they choose to eliminate – will be revealed at the live finale on April 15.